TABLE OF CONTENTS - Virginia Tech...Third International Conference on Processing and Utilization of...

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CURRICULUM VITAE Roe-Hoan Yoon

TABLE OF CONTENTS

Education ............................................................................................................................................................. 2

positions held ...................................................................................................................................................... 2

Professional Activities ....................................................................................................................................... 2

Membership in Professional Societies ................................................................................................................. 2

Editorial Board Membership for Scholarly Journals and Proceedings ........................................................... 3

Committee Memberships ....................................................................................................................................... 3

Honors and Awards: ........................................................................................................................................... 4

Publications: ....................................................................................................................................................... 4

Refereed Journal Articles ..................................................................................................................................... 4

Conference Proceedings ...................................................................................................................................... 10

Book ........................................................................................................................................................................ 22

Book Chapters ....................................................................................................................................................... 22

Other Publications ................................................................................................................................................ 23 a) Preprints ..................................................................................................................................................... 23 b) Annual Reviews...................................................................................................................................... 26 c) Journal Editorships ................................................................................................................................... 26

Patents.................................................................................................................................................................... 27

Plenary Papers/Keynote Addresses/Award Lectures ..................................................................................... 29

Congressional and Legislative Testimonies ........................................................................................................ 30

Presentation at Professional Meetings ............................................................................................................. 31

Invited Lectures (since 1982) .............................................................................................................................. 47

Short Courses Taught ........................................................................................................................................... 54

Workshops/Symposia Organized ........................................................................................................................ 55

Reports ................................................................................................................................................................... 56

academic activities .......................................................................................................................................... 82

Courses Taught at Virginia Tech: ...................................................................................................................... 82

Graduate Committee Chairman for the Following: ....................................................................................... 82 a) Ph.D. Students ........................................................................................................................................... 82 b) M.S. Students ......................................................................................................................................... 84 c) Post Doctorial Fellows and Visiting Scholars ........................................................................................ 85

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CURRICULUM VITAE Name: Roe-Hoan Yoon Birth Date and Place: November 21, 1943; Seoul, Korea Citizenship: U.S.A., Naturalized November 18, 1985 Academic Rank: University Distinguished Professor Nicholas T. Camicia Professor Affiliation: Department of Mining and Minerals Engineering, and Department of Material Science and Engineering Department of Engineering Science and Mechanics Virginia Polytechnic Institute and State University Blacksburg, Virginia 24061-0258 Phone: 540-231-7056 Fax: 540-231-3948 e-mail: [email protected] EDUCATION 1967 B.Eng., Mining Engineering, Seoul National University, Korea 1971 M.Sc., Metallurgical Engineering (Dean’s Honors List), McGill University, Canada 1977 Ph.D., Metallurgical Engineering (Dean’s Honors List), McGill University, Canada POSITIONS HELD 1967-68 Research Engineer, Korea Institute of Science and Technology (KIST), Seoul, Korea. 1976-79 Research Scientist, Canada Center for Minerals and Energy Technology (CANMET),

Department of Energy, Mines and Resources, Ottawa, Canada. 1979-84 Associate Professor, Department of Mining and Minerals Engineering, Virginia Tech,

Blacksburg, Virginia. 1980 Oak Ridge Summer Faculty, U.S. Department of Energy, Pittsburgh Energy Technology

Center, Coal Preparation Division, Pittsburgh, Pennsylvania. 1983 Visiting Research Fellow, Julius Kruttschnitt Mineral Research Centre, University of

Queensland, Australia. 1984-85 Professor, Department of Mining and Minerals Engineering, Virginia Tech 1985- Nicholas T. Camicia Professor of Mineral Engineering, Department of Mining and Minerals

Engineering, Virginia Tech 1988-01 Director, Center for Coal and Minerals Processing, Virginia Tech 2001- Director, Center for Advanced Separation Technologies, Virgina Tech 2010- Consortium Area Lead, NETL-Regional University Alliance 2010- University Distinguished Professor PROFESSIONAL ACTIVITIES

Membership in Professional Societies Society for Mining, Metallurgy, and Exploration, Inc., AIME American Chemical Society, Colloid and Surface Chemistry Division The Research Society of Resources Processing, Japan National Academy of Engineering, Foreign Member, Korea

mailto:[email protected]

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National Academy of Engineering Editorial Board Membership for Scholarly Journals and Proceedings Minerals and Metallurgical Processing, Editorial Board (past) International Journal of Mineral Processing, Editorial Board (past) International Journal of Mineral Processing, Guest Editor (1982) Colloids and Surfaces, Guest Editor (1982) Third International Conference on Processing and Utilization of High-Sulfur Coals, Advisory Board, Ames, Iowa, November 14-16, 1989. Fourth International Conference on Processing and Utilization of High-Sulfur Coals, Advisory Board, Idaho Falls, Idaho, August 26-30, 1991. Fifth International Conference on Processing and Utilization of High-Sulfur Coals, Advisory Board, Lexington, Kentucky. October 25-28, 1993 Coal Preparation, An International Journal, Editorial Board (past) Centenary of Flotation Symposium, Proceesings, AusIMM, 2005

Committee Memberships

Education Committee, Mineral Processing Division, AIME, Member 1983-84; Chairman 1985-86. Executive Committee, Mineral Processing Division, AIME, Member 1987. Fundamentals Committee, Mineral Processing Division, AIME, Member 1981-83; Vice Chair 1984. General Committee, Mineral Processing Division, AIME, Member 1986. Papers and Publications Committee, Mineral Processing Division, AIME, Chairman 1986. Student Member Affairs Committee, Mineral and Metallurgical Processing Division, AIME, Member

1988-92. Taggart Award Committee, Mineral and Metallurgical Processing Division, AIME, Member 1985-87;

Chair 1988-89. Technical Papers Subcommittee, Mineral and Metallurgical Processing Division, AIME, Member

1986-89. Young Engineer Award Committee, Mineral Processing Division, AIME, Member 1986. Executive Committee, International Symposium-Workshop on Particulate and Multi-Phase

Processes, Miami Beach, Florida, April, 1985, Member. Program Committee, Powder Science and Technology Division, Fine Particle Society, Member 1988. Book Publishing Committee, Mineral and Metallurgical Processing Division, AIME, Member 1990. Departmental Promotion and Tenure Committee, College of Engineering, Virginia Tech, Chair,

1990. Honorifics Committee, College of Engineering, Virginia Tech, Member 1987-92. Materials Engineering Science Administrative Board, Virginia Tech, Member 1993. Search Committee, Dean of the College of Engineering, Virginia Tech, Member, 1993. Department of Materials Science and Engineering, Graduate Committee, Virginia Tech, Member

1999. Committee on Technologies for the Mining Industries, National Research Council, Consultant, 2000 Committee on Coal Fines Impoundment, National Research Council, 2001 A.M. Gaudin Award Committee, Member, SME/AIME, 2004- Research Council, SME/AIME, Member, 2003- Centenary Flotation Symposium, International Organizing Committee, C-Chair, 2002-5 Eastern Coal Council, Member, 2003- International Seminar on Mineral Processing Technology, Advisory Board, Bombaym India, February

2007 Richards Award Committee, Member, SME/AIME, 2008 –

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HONORS AND AWARDS: National Research Council of Canada Fellowship, 1971-76 Outstanding Faculty Award, Department of Mining and Minerals Eng, Virginia Tech, 1982 Honorary Professorship, North-East University, China, 1992 Alumni Award for Research Excellence, Virginia Tech, 1995 Academy of Engineering of Korea, Foreign Associate, 1999 Distinguished Member, Society of Mining Engineers, 2000 Distingushed Alumni Award, College of Engineering, Seoul National University, 2001 Research Award, College of Engineering, Virginia Tech, 2003 A. M. Gaudin Award, Society of Mining Engineers, 2003 Honorary Professorship, Central South University of China, 2005 Richards Award, Society of Mining Engineers, 2007 National Academy of Engineering, 2008 Symposium Honoring Roe-Hoan Yoon, Society for Mining, Metallurgy and Exploration, 2010 PUBLICATIONS: Refereed Journal Articles 1. Yoon, R.H., and Salman, T., "Zero Point of Charge of Cupric Hydroxide and Surface Area

Determination by Dye Adsorption," Canadian Metallurgical Quarterly, vol. 10, no. 3, pp. 171-177. (197l).

2. LeNormand, J., Salman, T., and Yoon, R.H., "Hydroxamate Flotation of Malachite," Canadian Metallurgical Quarterly, vol. 18, pp. 125-129 (1979).

3. Yoon, R.H., Salman, T, and Donnay, G.,"Predicting Points of Zero Charge of Oxides and Hydroxides," Journal of Colloid and Interface Science, vol. 70, no. 3, pp. 483-493. (1979).

4. Yoon, R.H., "Collectorless Flotation of Chalcopyrite and Sphalerite Ores by Using Sodium Sulfide,” International Journal of Mineral Processing, vol. 8, pp. 31-48 (1981).

5. Yoon, R.H., "Flotation of Coal Using Micro-Bubbles and Inorganic Salts," Mining Congress Journal, vol. 68, no. 12, pp. 76-80 (1982).

6. Luttrell, G.H., and Yoon, R.H., "Automation of a Laboratory Flotation Machine for Improved Performance," International Journal of Mineral Processing, vol. 10, pp. 165-172 (1983).

7. Pong, T.C., Haralick, R.M., Craig, J.R., Yoon, R.H., and Choi, W.Z., "The Application of Image Analysis Techniques to Mineral Processing," Pattern Recognition Letters, vol. 2, no. 2, pp. 117-123 (1983).

8. Pritzker, M.D., and Yoon, R.H., "Thermodynamic Calculations on Sulfide Flotation Systems: I. Galena-Ethyl Xanthate System in the Absence of Metastable Species," International Jouranl of Mineral Processing, vol. 12, no. 1-3, pp. 95-125 (1984).

9. Luttrell, G.H., and Yoon, R.H., "Surface Studies of the Collectorless Flotation of Chalcopyrite," Colloids and Surfaces, vol. 12, no. 3/4, pp. 239-254 (1984).

10. Luttrell, G.H., and Yoon, R.H., "The Collectorless Flotation of Chalcopyrite Ores Using Sodium Sulfide," International Journal of Mineral Processing, vol. 13, pp. 271-283 (1984).

11. Pritzker, M.D., Yoon, R.H., Basilio, C., and Choi, W.Z., "Solution and Flotation Chemistry of Sulfide Minerals," Canadian Metallurgy Quarterly, vol. 24, no. 1, pp. 27-38 (1985).

12. Yoon, R.H., and Luttrell, G.H., "The Effect of Bubble Size on Fine Coal Flotation," Coal Preparation, vol. 2, no. 3, pp. 179-192 (1986).

13. Yoon, R.H., and Yordan, J.L., "Zeta Potential Measurements on Microbubbles Generated Using Various Surfactants," Journal of Colloid and Interface Science, vol. 113, no. 2, pp. 430-438 (1986).

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14. Mankosa, M.J., Adel, G.T., and Yoon, R.H., "Effect of Media Size in Stirred Ball Mill Grinding of Coal," Powder Technology, vol. 49, no. 1, pp. 75-83 (1986).

15. Woods, R., Yoon, R.H., and Young, C.A., "Eh-pH Diagrams for Stable and Metastable Phases in the Copper-Sulfur-Water System," International Journal of Mineral Processing, vol. 20, pp. 109-120 (1987).

16. Choi, W.Z., Yoon, R.H., Craig, J.R., and Haralick, R.M., "Application of Population Balance Model to Comminution of Complex Sulfide Ores," Particulate and Multiphase Processes, T. Ariman and T.N. Vezirouglu, eds., Hemisphere Publishing Company, Washington, DC, vol. I, pp. 903-916 (1987).

17. Choi, W.Z., Adel, G.T., and Yoon, R.H., "Liberation Analysis Using a Simple Image Processing System," Particulate and Multiphase Processes, T. Ariman and T.N. Vezirouglu, eds., Hemisphere Publishing Company, Washington, DC, vol. III, pp. 443-458 (1987).

18. Choi, W.Z., Adel, G.T., and Yoon, R.H., "A Size Reduction/Liberation Model of Grinding Including Multiple Classes of Composite Particles," Minerals and Metallurgical Processing, May, 1987, pp. 102-108 (1987).

19. Pritzker, M.D., and Yoon, R.H., "Thermodynamic Calculations on Sulfide Flotation Systems. II. Comparisons with Electrochemical Experiments on the Galena-Ethyl Xanthate System and Metastable Species," International Journal of Mineral Processing, vol. 20, pp. 267-290 (1987).

20. Choi, W.Z., Adel, G.T., and Yoon, R.H., "Estimation of Model Parameters for Liberation and Size Reduction," Minerals and Metallurgical Processing, February, 1987, pp. 33-39 (1987).

21. Choi, W.Z., Adel, G.T., and Yoon, R.H., "Liberation Modeling Using Automated Image Analysis," International Journal of Mineral Processing, vol. 22, pp. 59-73 (1988).

22. Pritzker, M.D., and Yoon, R.H., "A Voltammetric Study of Galena Immersed in Acetate Solution at pH 4.6," Journal of Applied Electro-chemistry, vol. 18, pp. 323-332 (1988).

23. Leppinen, J.O., Basilio, C.I., and Yoon, R.H., "FTIR Study of Thionocarbamate Adsorption on Sulfide Minerals," Colloids and Surfaces, vol. 32, pp. 113-125 (1988).

24. Mielczarski, J.A., and Yoon, R.H., "FTIR External Reflection Study of Molecular Orientation in Spontaneously Adsorbed Layers on Low-Absorption Substrates," Journal of Physical Chemistry, vol. 93, pp. 2034-2038 (1989).

25. Laskowski, J.S., Yordan, J.L., and Yoon, R.H., "The Electrokinetic Potential of Microbubbles Generated in Aqueous Solutions of Weak-Electrolyte Type Surfactants," Langmuir, vol. 5, pp. 373-376 (1989).

26. Mielczarski, J.A., and Yoon, R.H., "Spectroscopic Studies of the Structure of the Adsorption Layer of Thionocarbamate on Copper and Activated Zinc Sulfide," Journal of Colloid and Interface Science, vol. 131, no. 2, pp. 423-432 (1989).

27. Leppinen, J.O., Basilio, C.I., and Yoon, R.H., "In-Situ FTIR Study of Ethyl Xanthate Adsorption on Sulfide Minerals Under Conditions of Controlled Potential," International Journal of Mineral Processing, vol. 26, pp. 259-274 (1989).

28. Mehta, R.K., Adel, G.T., and Yoon, R.H., "Liberation Modeling and Parameter Estimation for Multicomponent Mineral Systems," Powder Technology, vol. 58, no. 3, pp. 195-209 (1989).

29. Xu. Z., and Yoon, R.H., "The Role of Hydrophobic Interactions in Coagulation," Journal of Colloid and Interface Science, vol. 132, no. 2, pp. 532-541(1989).

30. Mankosa, M.J., Adel, G.T., and Yoon, R.H., "Effect of Operating Parameters in Stirred Ball Mill Grinding of Coal," Powder Technology, vol. 59, pp. 255-260 (1989).

31. Mehta, R.K., Adel, G.T., and Yoon, R.H., "Liberation Modeling and Parameter Estimation for Multicomponent Mineral Systems," Minerals and Metallurgical Processing, pp. 156-163. August Issue (1990).

32. Xu, Z., and Yoon, R.H., "A Study of Hydrophobic Coagulation," Journal of Colloid and Interface Science, vol. 134, no. 2, pp. 427-434 (1990).

33. Pritzker, M.D., and Yoon, R.H., "The Relationship between the Open-Circuit Potential of a galena Electrode and the Dissolved Lead Concentration," Hydrometallurgy, vol. 23, pp. 341-352 (1990).

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34. Woods, R., Young, C.A., and Yoon, R.H., "Ethyl Xanthate Chemisorption Isotherms and Eh-pH Diagrams for the Copper/Water/Xanthate and Chalcocite/Water/Xanthate Systems," International Journal of Mineral Processing, vol. 30, pp. 17-33 (1990).

35. Young, C.A., Basilio, C.I., and Yoon, R.H., "Thermodynamics of Chalcocite-Xanthate Interactions," International Journal of Mineral Processing, vol. 31, pp. 265-279 (1990).

36. Celik, M.S., and Yoon, R.H., "Adsorption of Polyoxyethylene Nonylphenol Homologues on a Low-Ash Coal," Langmuir, vol. 7, no. 8, pp. 1770-1774 (1990).

37. Rojas, H.E., Adel, G.T. and Yoon, R.H., "The Effect of Mill Operating Parameters on Mineral Liberation," Minerals and Metallurgical Processing, November, pp. 171-174 (1991).

38. Luttrell, G.H., and Yoon, R.H., "A Flotation Column Simulator Based on Hydrodynamic Principles," International Journal of Mineral Processing, vol. 33, no. 1/4, pp. 335-368 (1990).

39. Yoon, R.H., and Yordan, J.L., "Induction Time Measurements for the Quartz-Amine Flotation System," Journal of Colloid and Interface Science, February, 1991, vol. 141, no. 2, pp. 374-383 (1991).

40. Mielczarski, J.A., and Yoon, R.H., "Spectroscopic Studies of the Structure of the Adsorption Layer of Thionocarbamate. II. On Cuprous Sulfide," Langmuir, vol. 7, pp. 101-106 (1991).

41. Yoon, R.H., and Yordan, J.L., "The Critical Rupture Thickness of Thin Water Films on Hydrophobic Surfaces;" Journal of Colloid and Interface Science, October 15, 1991, vol. 146, no. 2, pp. 565-572 (1991).

42. Han, O.H., Choung, J.W., and Yoon, R.H., "Application of Microbubble Column Flotation Technique for Up-Grading Crystalline Graphite," Journal of the Korean Institute of Mineral and Energy Resources Engineers, vol. 28, no. 2, pp. 141-147 (1991).

43. Leppinen, J.O., Yoon, R.H., and Mielczarski, J.A., "FTIR Studies of Ethyl Xanthate Adsorption on Gold, Silver and Gold-Silver Alloys," Colloids and Surfaces, vol. 61, pp. 189-203 (1991).

44. Yoon, R.H., "Hydrodynamic and Surface Forces in Bubble-Particle Interactions," Aufbereitungs-Technik, vol.32, no. 9, pp. 474-485 (1991).

45. Yoon, R.H., Nagaraj, D.R., Wang, S.S., and Hildebrand, T.M., "Beneficiation of Kaolin Clay by Froth Flotation using Hydroxamate Collectors," Minerals Engineering, vol. 5, no. 3-5, pp. 457-467 (1992).

46. Basilio, C.I., Kim, D.S., Yoon, R.H., and Nagaraj, D.R., "Studies on the Use of Monothiophosphates for Precious Metals Flotation," Minerals Engineering, vol. 5, nos. 3-5, pp. 397-409 (1992).

47. Mankosa, M.J., Luttrell, G.H., Adel, G.T., and Yoon, R.H., "A Study of Axial Mixing in Column Flotation," International Journal of Mineral Processing, vol. 35, pp. 51-64 (1992).

48. Woods, R., Basilio, C.I., Kim, D.S., and Yoon, R.H., "Ethyl xanthate chemisorption isotherms and Eh-pH diagrams for the silver/water/ethyl xanthate system," Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, vol. 328, pp. 179-194 (1992).

49. Yoon, R.H., Luttrell, G.H., Adel, G.T., and Mankosa, G.T., "The Application of Microcel Column Flotation to Fine Coal Cleaning," Coal Preparation, vol. 10, pp. 177-188 (1992).

50. Luttrell, G.H., and Yoon, R.H., "A Hydrodynamic Model for Bubble-Particle Attachment", Journal of Colloid and Interface Science, vol. 154, no. 1, pp. 129-137 (1992).

51. Yotsumoto, H., and Yoon, R.H., "Application of Extended DLVO Theory: I, Stability of Rutile Suspensions," Journal of Colloid Interface Science, vol. 157, pp. 426-433 (1993).

52. Yotsumoto, H., and Yoon, R.H., "Application of Extended DLVO Theory: II, Stability of Silica Suspensions," Journal of Colloid Interface Science, vol. 157, pp. 434-441 (1993).

53. Rabinovich, Ya. I., Guzonas, D.A., and Yoon, R.H., "An Infrared Investigation of the Structure of Langmuir-Blodgett Films of Dimethyldioctadecylammonium Bromide (DDOAB) on Silicon in Water," Journal of Colloid and Interface Science, vol. 155, pp.221-225 (1993).

54. Woods, R., Kim, D.S., and Yoon, R.H., "The Potential Dependence of the Flotation of Chalcocite with Diethyl Dithiophosphate," International Journal of Mineral Processing, vol. 39, pp. 101-106 (1993).

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55. Rabinovich, Y., Guzonas, D.A., and Yoon, R.H., "The Role of Chain Order in the Long-Range Attractive Force Between Hydrophobic Surfaces," Langmuir, vol. 9, no. 5, pp. 1168-1170 (1993).

56. Yoon, R.H., "Microbubble Flotation," in Minerals Engineering, vol. 6, no. 6, pp. 619-630 (1993). 57. Yotsumoto, H., Yoon, R.H., Wakamatsu, T., and Ito, S.-I., "A Study on Structual Force in Silica

Suspensions," Journal of the Mining and Materials Processing Institute of Japan, vol. 109, pp. 909-916 (1993).

58. Richardson, P.E., Yoon, R.H., Woods, R., and Buckley, A.N., "The Photoelectro-chemistry of Galena," International Journal of Mineral Processing, vol. 41, pp. 78-97 (1994).

59. Woods, R., Basilio, C.I., Kim, D.S., and Yoon R.H., "Chemisorption of Ethyl Xanthate on Silver-Gold Alloys," Colloids and Surfaces, vol. 83, pp. 1-7 (1994).

60. Yotsumoto, H., Yoon, R.H., Wakamatsu, T., Ito, S., and Sakamoto, H., "Estimation of Structural Force in Rutile Suspension," Journal of the Mining and Materials Processing Institute of Japan, pp. 613-618 (1994).

61. Forrest, W.R., Adel, G.T., and Yoon, R.H., "Characterizing Coal Flotation Performance Using Release Analysis," Coal Preparation: A Multinational Journal, vol. 14, pp. 13-27 (1994).

62. Flinn, D.H., Guzonas, D.A., and Yoon, R.H., "Characterization of Silica Surfaces Hydrophobized by Octadecyltrichlorosilane," Journal of Colloid and Surfaces, vol. 87, pp. 163-176 (1994).

63. Yoon, R.H., and Ravishankar, S.A., "Application of Extended DLVO Theory: III. Effect of Octanol on the Long-Range Hydrophobic Forces between Deodecylamine-Coated Mica Surfaces," Journal of Colloid and Interface Science, vol. 166, pp. 215-224 (1994).

64. Yoon, R.H., and Rabinovich, Y.I., "Use of Atomic Force Microscope for the Measurements of Hydrophobic Forces between Silanated Silica Plate and Glass Sphere," Langmuir, vol. 10, pp. 1903-1909 (1994).

65. Richardson, P.E., Hu, Q., Finkelstein, N.P., and Yoon, R.H., "An Electrochemical Method for the Study of the Flotation Chemistry of Sphalertie," International Journal of Mineral Processing, vol. 41, pp. 71-76 (1994).

66. Choung, J.W., Luttrell, G.H., and Yoon, R.H., "Characterization of Operating Parameters in the Cleaning Zone of Microbubble Column Flotation," International Journal of Mineral Processing, vol. 39, pp. 31-40 (1994).

67. Tao, D.P., Li, Y.Q., Richardson, P.E., and Yoon, R.H., "The Incipient Oxidation of Pyrite," Colloids and Surfaces, vol. 93, pp. 229-239 (1994).

68. Woods, R., Basilio, C.I., Kim, D.S., Yoon, R.H., "Chemisorption of Ethyl Xanthate on Copper Electrodes," International Journal of Mineral Processing, vol. 42, pp. 215-223 (1994).

69. Rabinovich, Y.I. and Yoon, R.H., "Use of Atomic Force Microscopy for the Measurements of Hydrophobic Forces," Colloid and Surfaces, vol. 93, pp. 263-273 (1994).

70. Chang, K.T., Yoon, R.H. and Richardson, P.E., "Electrochemical Behaviors and Flotation Characteristics of Arsenopyrite," Journal of The Korean Institute of Mineral and Energy Resources Engineers, vol. 31, no. 1, pp. 1-8 (1994).

71. Yotsumoto, H., Yoon, R.H., Wakamatsu, T., Ito, S., Sakamoto, H., “On Secondary Hydration Force in Stannic Oxide Suspensions,” Resources Processing, vol. 41, no. 4, pp. 151-158 (1994).

72. Woods, R. Basilio, C.I., Kim*, D.S. and Yoon, R.H., “Chemisorption of Ethyl Xanthate on Copper Electrodes,” International Journal of Mineral Processing, Vol. 42, pp. 215-223, (1994).

73. Yotsumoto,H., Yoon, R.H., Wakamatsu, T., Ito, S., and Sakamoto, H., “Effects of Alcohol and Surface Active Agent on the Stability of Aqueous Oxide Suspensions,” Journal of the Mining and Materials Processing Institute of Japan, vol. 110, pp. 511-516 (1994).

74. Pugh, R.J., and Yoon, R.H., “Hydrophobicity and Rupture of Thin Aqueous Films.” J.Colloid Interface Sci. 163, 169-176 (1994).

75. Yoon, R.H., Basilio, C.I., Maticorena, M.A., Karr, A.N., and Stratton-Crawley, R., “A Study of the Pyrrhotite Depression Mechanism by Diethylenetriamine,” Minerals Engineering, vol. 8, no. 7, pp. 807-816 (1995).

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76. Mantel, M., Rabinovich, Y.I., Wightman, J.P., and Yoon, R.H., “A Study of Hydrophobic Interactions Between Stainless Steel and Silanated Glass Surface Using Atomic Force Microscopy,” Journal of Colloid and Interface Science, vol. 170, pp. 203-214 (1995).

77. Yoon, R.H. and Ravishankar, S.A., “Long-Range Hydrophobic Forces Between Mica Surfaces in Dodeclammonium Chloride Solutions in the Presence of Dodecanol,” Journal of Colloid and Interface Science, vol. 179, pp. 391-402 (1996).

78. Yoon, R.H. and Ravishankar, S.A., “Long-Range Hydrophobic Forces between Mica Surfaces in Alkaline Dodecylammonium Chloride Solutions,” Journal of Colloid and Interface Science, vol. 179, pp. 403-411 (1996).

79. Yoon, R.H. and Mao, Laiqun, “Application of Extended DLVO Theory, IV, Derivation of Flotation Rate Equation from First Principles,” Journal of Colloid and Interface Science, vol. 181, pp. 613-626 (1996).

80. Yoon, R.H. and Ravishankar, S.A., “Long-Range Hydrophobic Forces Between Mica Surfaces in Alkaline Dodecylammonium Chloride Solutions,” Journal of Colloid and Interface Science, vol. 179, pp. 403-411 (1996).

81. Basilio, C.I., Kartio, I.J., and Yoon, R.H., “Lead Activation During Galena Flotation,” Minerals Engineering, vol.9 no. 8, pp. 869-879 (1996).

82. Yoon, R.H., Pazhianur, R., Adel, G.T., Richardson, P.E., “Cathodic Proctection to minimize Corrosive Wear in Ball Mills,” Minerals and Metallurgical Processing, vol. 14, pp.1-7 (1997).

83. Yoon, R.H., Flinn, D.H., and Rabinovich, Y. I., “Hydrophobic Interactions Between Dissimillar Surfaces,” Journal of Collloid and Interafce Science, vol. 185, pp. 363-370 (1997).

84. Basilio, C.I., Kartio, I.J., and Yoon, R.H., “Lead Activation During Galena Flotation,” Minerals Engineering, vol. 9, No. 8, 869-879 (1997).

85. Mao, L. and Yoon, R.H., “Predicting Flotation Rates Using a Rate Equation Derived from First Principles,” International Journal of Mineral Processing, vol. 50, pp. 171-181 (1997).

86. Yoon, R.H., Pazhianur, R., Adel, G.T., Richardson, P.E., “Cathodic Proctection to Minimize Corrosive Wear in Ball Mills,” Minerals and Metallurgical Processing, vol. 14, pp.1-7 (1997).

87. Yoon, R.H., Tao, D.P., Lu, M,.X., Richardson, P.E., Luttrell, G.H., “Improving Pyrite Rejection by Galvanic Control,” Coal Prepartation, vol. 18, pp. 53-68 (1997).

88. Yoon, R.H., Ravishankar, S.A., “Long-range Hydrophobic Forces in the Amine Flotation of Quartz,” Minerals and Metallurgical Processing, pp.10-17 (1997).

89. Woods, R., Chen, Z. and Yoon, R.H., “Isotherms for the Chemisorption of Ethyl Xanthate on Lead,” International Journal of Mineral Processing, Vol. 50, pp. 47-52 (1997).

90. Yoon, R.-H., and Luttrell, G.H., “Method for Dewatering Particles,” Journal of Cleaner Production, vol. 5, No. 3, pp. 232 (1997).

91. Luttrell, G.H., Venkatraman, P., Yoon, R.H., “Removal of Hazardous Air Pollutant Precursors by Advanced Coal Preparation,” Coal Preparation, vol.19, pp. 243-255 (1998).

92. Kartio, I.J., Basilio, C.I., and Yoon, R.H., “An XPS Study of Sphaletite Activation by Copper,” Langmuir, Vol. 14, No. 18, p. 5274-5278 (1998).

93. Dunn, P.L., Cruz, E.B., Luttrell, G.H., Adel, G.T., “Development of a video-based coal slurry ash analyzer,” Minerals & Metallurgical Processing, Vol. 15, No. 2, pp. 1-10 (1998).

94. Yoon, R.H. and Pazhianur, R., “Direct Force Measurement between Hydrophobic Glass Sphere and Covellite Electrode in Potassium Ethyl Xanthate Solutions at pH 9.2,” Colloids and Surfaces, vol. A144, p. 59-69 (1998).

95. Yoon, R.H., Vivek, S., “Effects of Short-Chain Alcohols and Pyridine on the Hydration Forces between Silica Surfaces,” Journal of Colloid and Interface Science, vol. 204, pp. 179-186 (1998).

96. Kartio, I.J., Basilio, C.I., and Yoon, R.H., “An XPS Study of Sphaletite activation by Copper,” Langmuir, Vol. 14, No. 18, p. 5274-5278 (1998).

97. Luttrell, G.H., Venkatraman, P., Yoon, R.H., “Removal of Hazardous Air Pollutant Precursors by Advanced Coal Preparation,” Coal Preparation, Vol.19, pp. 243-255 (1998).

98. Yoon, R.H. and B. Suha Aksoy, “Hydrophobic Forces in Thin Water Films Stabilized by Dodecylammonium Chloride,” Journal of Colloid and Interface Science, vol. 211, pp. 1-10 (1999).

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99. Yoon, R.H., "The Role of Hydrodynamic and Surface Forces in Bubble-Particle Interactions," International Journal of Mineral Processing, vol.58, pp. 129-143 (2000).

100. Yoon, R. H., and Chen, Z., “Electrochemical Control of Copper Activated Sphalerite, at pH 9.2," International Journal of Mineral Processing, vol. 58, pp. 57-66 (2000).

101. Tao, D., Luttrell, G.H., and Yoon, R.H., “A Parametric Study of Froth Stability and its Effect on Column Flotation of Fine Particles,” International Journal of Mineral Processing, vol. 59, pp. 25-44 (2000).

102. Luttrell, G.H., Kohmuench, J.N., and Yoon, R.H., “An Evaluation of Coal Preparation Technologies for Controlling Trace Element Emissions,” Fuel Processing Technology, Vol. 65-66, pp. 407-422 (2000).

103. Yoon, R.H., Luttrell, G.H., Asmatulu, R, "Extending the upper particle size limit for coal flotation". Journal of the South African Insttitute of Mining and Metallurgy, Oct., vol 102 (7), 411-415 (2002).

104. Jeon, H.S., Han, O.H., Shin, S.M., and Yoon, R.H., “Development of Recycling Techniques for Mill Rejects Using Triboelectric Separation,” J. Korean Inst. Resource Recycling,” vol. 11, No. 2, pp. 20-27 (2002).

105. Pazhianur, R. and Yoon, R.H., “Model for Hydrophobic Force,” Minerals & Metallurgical Processing, Vol. 20, No. 4, November, pp. 178-184 (2003).

106. Yoon, R.H., Asmatulu, R., Yildirim, I., Eryadin, M.K., and Luttrell, G.H., “Pilot-Scale Testing of Novel Fine-Particle Dewatering Aids,” Minerals & Metallurgical Processing, Vol. 20, No. 4, November 2003, pp. 206-210 (2003).

107. Tao, D.P., Richardson, P.E., Luttrell, G.H., and Yoon, R.H., “Electrochemical Studies of Pyrite Oxidation and Reduction Using Freshly Fractured Electrodes and Rotating Ring-Disc Electrodes,” Electrochimica Acta, Vol. 48, No. 24, October 30, 2003, pp. 3615-3623 (2003).

108. Mao, M., Zhang, J., Yoon, R.H., Ducker, W.A., “Is There a Thin Film of Air at the Smooth Hydrophobic Surface,” Langmuir, Vol. 20, No. 5, March 2, 2004, pp.1843-1849 (2004).

109. Wang, L. and Yoon, R.H., “Hydrophobic Forces in the Foam Films Stabilized by Sodium Dodecyl Sulfate: Effect of Electrolyte”, Langmuir, 20 11457 (2004).

110. Kim, H.J., Zhang, J., Yoon, R.H., and Gandour, R.,“Development of Environmentally Friendly Nonchrome Conversion Coating for Electrogalvanized Steel,” Surface and Coatings Technology, 188-189 762 (2004).

111. Wang, L. and Yoon, R.H., “Hydrophobic Forces in Thin Aqueous Films and Their Role in Film Thinning”, Colloids Surfaces A: Physicochem. Eng. Aspects, 263 267 (2005).

112. Zhang, J., Yoon, R.H., Mao, M., Ducker, W.A., “Effect of Degassing and Ionic Strength on AFM Force Measurements in Octadecyltrimetylammonium Chloride Solutions,” Langmuir 21 5831 (2005).

113. Honaker, R.Q., Yoon, R.H., and Luttrell, G.H., “Ultrafine Coal Cleaning Using Selective Hydrophobic Coagulation,” Coal Preparation – A Multinational Journal, Vol. 25, No. 2, pp. 81-98 (2005).

114. Mao, L. Wang, L. and Yoon, R.H., “Hydrophobicity of Oil Droplets in Water”, Minerals and Metallurgical Processing, 23, No. 1, pp. 45-51 (2006).

115. Wang, L. and Yoon, R.H., “Stability of Foams and Froths in the Presence of Ionic and Non-Ionic Surfactants”, Minerals Engineering 19, p. 539 (2006).

116. Asmatulu, R., Luttrell, G.H., and Yoon, R.H., “Dewatering of Fine Coal Using Hyperbaric Centrifugation,” Coal Preparation A Multinational Journal, 25, No. 3, 117-127 (2006).

117. Wang, L. and Yoon, R.H. “Role of Hydrophobic Force in the Thinning of Foam Films Containing a Nonionic Surfactant”, Colloids Surfaces A, 282-283, pp. 84-91 (2006).

118. Brady, M.L., Vlachos, P.P., and Telionis, D.P. and Yoon, R.H., “Evaluation of Multiphase Flotation Models in Grid Turbulence via Particle Image Velocimetry,” Int. J. Mineral Processing, 80, pp. 133-143 (2006).

119. Zhang, J., Yoon, R.H. and Eriksson, J.C., “AFM Surface Force Measurements Conducted with Silica in CnTACl Solutions: Effect of Chain Length on Hydrophobic Force,” Colloids and Surfaces A: Physicochem. Eng., Aspects 300, p. 335-345 (2007).

120. Wang, L. and Yoon, R.H., “Effects of Surface Forces and Film Elasticity on Foam Stability,”, Int. J. Miner. Process. 85, p. 101-110 (2008).

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121. Wang. J. and Yoon, R.H., “AFM Forces Measured between Gold Surfaces Coated with Self-Assembled Monolayers of 1-Hexadecanethiol,” Langnuir, 24, 7889-7892 (2008).

122. Yoon, R.-H., and Wang, L. “A Response to the Comments on Hydrophobic Forces in the Foam Films Stabilized by Sodium Dodecyl Sulfate,” Langmuir, 24, 5194-5196 (2008).

123. Wang L. and Yoon, R.H., “Effect of pH and NaCl Concentration on the Stability of Surfactant-Free Foam Films,” Langmuir, 25, 294-297 (2009).

124. Wang, J. and Yoon, R.-H., “Surface Forces between Xanthate-Coated Gold Surfaces,” Electrochemical Society Transactions, 28(6), 3-14 (2010).

125. Pan, L. and Yoon, R.H., “Hydrophobic Forces in Wetting Films,” Faraday Discussion, 146, 325-340, 2010 (2010).

126. Do, H., Brady, M., Telionis, D.P., Vlachos, and Yoon, R.-H. Yoon, "Numerical Modeling and Experiments of Coarsening Foam," Int. J. Mineral Processing, vol. 98, 66-73 (2011).

127. Keles, S., Luttrell, G.H., Yoon, R.-H., Estes, T., Schultz, W. and Bethell, P.J., "Development of the Centribaric™ Dewatering Technology," International Journal of Coal Preparation and Utilization, Vol. 30, No. 2-5, pp. 204-216 (2010).

128. Al-Thyabat, S., Yoon, R.-H., and Shin, D., "Floatability of Fine Phosphate in a Batch Column Flotation Cell," Mineral and Metallurgical Processing, vol. 28, No. 2, pp., 110-116 (2011).

129. Wang, J. Yoon, R.-H., and Eriksson, J.C., "Excess Thermodynamic Properties of Thin Water Films Confined Between Hydrophobized Gold Surfaces," J. Colloid and Interface Science, 364, 257–263 (2011).

130. Pan, L., S. Jung, and Yoon, R.-H., "Effect of Hydrophobicity on the Stability of the Wetting Films of Water formed on Gold Surfaces," J. Colloid and Interface Science, 361, 321-330 ( 2011).

131. Pan, L., Jung, S., and Yoon, R.-H., “A Fundamental Study on the Role of Collector in Kinetics of Bubble-Particle Interaction,” Int. J. Mineral Processing, 106-109, 37-41 (2012).

132. Li, Z., and Yoon, R.-H., “AFM Force Measurements between Gold and Silver Surfaces Treated in Ethyl Xanthate Solutions: Effect of Applied Potentials,” Miner. Eng. (2012); in press.

133. Zhang, J., Kouznetsov, D.L., Yu, M., Rylatt, M., and Yoon, R.-H., “Improving the Separation of Diamond from Gangue Minerals,” Miner. Eng. (2012); in press.

134. Wang, J., Yoon, R.-H., and Morris, J., "AFM Surface Force Measurements Conducted between Gold Surfaces Treated in Xanthate Solutions," Int. J. Mineral Processing, submitted.

Conference Proceedings

1. Yoon, R.H., and Salman, T., "Chemisorption of Sodium Lauryl Sulfate on Al2O3," in Proceedings of the International Conference on Colloids and Surfaces, Puerto Rico, June, 1976; Colloid and Interface Science, M. Kerker, ed., Academic Press, New York, vol. 3, pp. 233-246 (1976).

2. Yoon, R.H., and Salman, T., "Heats of Adsorption of Anionic Surfactant on Cu (OH)2 and Co(OH)2," in Proceedings of the Symposium on Polymers at Interfaces: Focus on Adhesion (Chemical Institute of Canada), Montreal, Canada, October, 1976, pp. 239-262(1976).

3. Yoon, R.H., and Stemerowicz, A., "Collectorless Flotation of Chalcopyrite and Sphalerite," in Proceedings of the 11th Annual Meeting of the Canadian Mineral Processors, January, 1979, pp. 186-204 (1979).

4. Craig, J. R., Yoon, R.H., Haralick, R. M., Pong, T. C., and Choi, W. Z., "The Application of the General Image Processing System (GIPSY) to Mineral Beneficiation Studies," Process Mineralogy II, The Metallurgical Society of AIME, Pennsylvania, pp. 55-67 (1982).

5. Sebba, F., and Yoon, R.H., "The Use of Micron-Sized Bubbles in Mineral Processing," in Proceedings of the Engineering Foundation Conference, Rindge, New Hampshire, August, 1981; Interfacial Phenomena in Mineral Processing, B. Yarar and D. Spottiswood, eds., United Engineering Trustees, Inc., New York, pp. 161-172 (1982).

6. Groppo, J. G., Jr., and Yoon, R.H., "Selective Flotation of Sulfide Ores Using Alkyl Pyridinium Collectors," in Proceedings of the Engineering Foundation Conference, Rindge, New Hampshire,

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August, 1981; Interfacial Phenomena in Mineral Processing, B. Yarar and D. Spottiswood, eds., United Engineering Trustees, Inc., New York, pp. 271-285 (1982).

7. Yoon, R.H., and Miller, K.J., "A Preliminary Investigation on the Application of Microgas Dispersion for Fine Coal Flotation," in Proceedings of the Technical Program, International Powder and Bulk Solids Handling and Processing, Rosemont, Illinois, May, 1982, pp. 357-370 (1982).

8. Halsey, G.S., Yoon, R.H., and Sebba, F., "Cleaning of Fine Coal by Flotation Using Colloidal Gas Aphrons," in Proceedings of the Technical Program, International Powder and Bulk Solids Handling and Processing, Rosemont, Illinois, May, 1982, pp. 67-75 (1982).

9. Yoon, R.H., "The Beneficiation of Kaolin Clay, Pegmatites and Kyanite Ores in the United States," in Proceedings of the Symposium on the Utilization of Non-Metallic Minerals, Seoul, Korea, October 1983, pp. 20-26 (1983).

10. Craig, J.R., Yoon, R.H., Haralick, R.M., Choi, W.Z., and Pong, T.C., "Mineralogical Variations during Comminution of Complex Sulfide Ores," Process Mineralogy III, W. Petruk, ed., SME-AIME, New York, pp. 51-63 (1984).

11. Pritzker, M.D., and Yoon, R.H., "Thermodynamic Calculations and Electrochemical Studies on the Galena-Ethyl Xanthate System," Electrochemistry in Mineral and Metals Processing, P. E. Richardson, S. Srinivasan and R. Woods, eds., The Electrochemical Society, New Jersey, pp. 26-53 (1984).

12. Pritzker, M.D., Yoon, R.H., Basilio, C., and Choi, W.Z., "Solution and Flotation Chemistry of Sulfide Minerals," in Proceedings of the 23rd Annual Conference of Metallurgists, Quebec, Quebec, August 1984, Paper No. 15 (1984).

13. Yoon, R.H., Luttrell, G.H., Adel, G.T., and Trigg, R.D., "Cleaning of Ultrafine Coal by Microbubble Flotation," in Proceedings of The First Annual Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September, 1984, pp. 880-896 (1984).

14. Brown, M.D., Adel, G.T., and Yoon, R.H., "A Laboratory Stirred Ball Mill for Fine Grinding of Coal," in Proceedings of the Third Annual Meeting of the Collegiate Association for Mining Education, University of Kentucky, Lexington, Kentucky, 1984, pp. 226-235 (1984).

15. Luttrell, G.H., Keyser, P.M., Adel, G.T., and Yoon, R.H., "Improvements in Recovery and Selectivity with the Microbubble Flotation Process," in Proceedings of the Second Annual Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September, 1985, pp. 43-54 (1985).

16. Craig, J.R., Haralick, R.M., Yoon, R.H., Pong, T.C., and Choi, W.Z., "Ore Microscopic Studies Using the General Image Processing System (GIPSY)," in Proceedings of the 13th General Meeting of the International Mineralogical Association, Varna, Bulgaria, September 19-25, 1982; Physics of Minerals and Ore Microscopy , Publishing House of the Bulgarian Academy of Sciences, Sofia, pp. 223-232 (1986).

17. Yoon, R.H., and Shi, J., "Processing of Kaolin Clay," in Proceedings of the Arbiter Symposium, 1986; Advances in Mineral Processing, P. Somasundaran, ed., AIME, New York, pp. 366-379 (1986).

18. Yoon, R.H., Adel, G.T., and Luttrell, G.H., "Development of the Microbubble Column Flotation Process," Processing and Utilization of High-Sulfur Coals, II Y. P. Chugh and R. D. Caudle, eds. Elsevier, New York, pp. 533-543 (1987).

19. Yoon, R.H., Xu, Z., Chen, J., and Chen, W., "Selective Flocculation of Titanomagnetite, Ilmenite and Feldspar Using Sulphonated Polyacrylamide," in Proceedings of the International Symposium on Flocculation in Biotechnology and Separation Systems, San Francisco, California, July 28-August 1, 1986; Process Technology Proceedings, 4, Y.A. Attia, ed., Elsevier, New York, pp. 707-716 (1987).

20. McCreary, T.W., Long, G.L., and Yoon, R.H., "Characterization of Sulfur Emission Lines in the UV and VIS Regions for Coal Slurry Injection into the DCP," in Proceedings of the 14th Annual Meeting of the Federation of Analytical Chemistry and Spectroscopic Societies, Detroit, Michigan, October, 1987, Paper No. 337 (1987).

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21. Yoon, R.H., Adel, G.T., Luttrell, G.H., and Weber, A.T., "Scale-Up of the Virginia Tech Microbubble Column Flotation Process," in Proceedings of the Fourth Korea/USA Joint Workshop on Coal Utilization Technology, Seoul, Korea, October 19-21, 1987, pp. 105-114 (1987).

22. Yordan, J., and Yoon, R.H., "Induction Time Measurements for a Coal Flotation System," Interfacial Phenomena in Biotechnology and Materials Separations Y.A. Attia, B.M. Moudgil and S. Chander, eds., Elsevier, New York, pp. 333-343 (1988).

23. Yoon, R.H., Adel, G.T., Luttrell, G.H., Mankosa, M.J., and Weber, A.T., "Microbubble Flotation of Fine Particles," Interfacial Phenomena in Biotechnology and Materials Separations, Y.A. Attia, B.M. Moudgil and S. Chander, eds., Elsevier, New York, pp. 363-374 (1988).

24. Young, C.A., Woods, R., and Yoon, R.H., "A Voltammetric Study of Chalcocite Oxidation to Metastable Copper Sulfides," Electrochemistry in Mineral and Metal Processing II, P. E. Richardson and R. Woods, eds., Proceedings Volume 88-21, The Electrochemical Society, Pennington, New Jersey, pp. 3-17 (1988).

25. Leppinen, J.O., Basilio, C.I., and Yoon, R.H., "Spectroelectrochemical Study of Ethyl Xanthate Adsorption on Sulfide Minerals," Electrochemistry in Mineral and Metal Processing II, P. E. Richardson and R. Woods, eds., Proceedings Volume 88-21, The Electrochemical Society, Pennington, New Jersey, pp. 49-65 (1988).

26. Luttrell, G.H., Adel, G.T., and Yoon, R.H., "Hydrodynamics and Mathematical Modeling of Fine Coal Flotation," XVI International Mineral Processing Congress, E. Forssberg, ed., Elsevier Science Publishers, Amsterdam, pp. 1791-1802 (1988).

27. Mankosa, M.J., Adel, G.T., Luttrell, G.H., and Yoon, R.H., "Scale-Up and Design Aspects of Column Flotation," Production and Processing of Fine Particles, A.J. Plumpton, ed., Canadian Institute of Mining and Metallurgy, Pergamon Press, Toronto, pp. 185-194 (1988).

28. Luttrell, G.H., and Yoon, R.H., "Determination of the Probability of Bubble-Particle Adhesion Using Induction Time Measurements," Production and Processing of Fine Particles, A.J. Plumpton, ed., Canadian Institute of Mining and Metallurgy, Pergamon Press, Toronto, pp. 159-167 (1988).

29. Adel, G.T., Yoon, R.H., and Ehrich R.W., "Image Analysis Applications in Mineral Processing," in Proceedings of the Artificial Intelligence in Minerals and Materials Technology Conference, U.S. Department of the Interior, Bureau of Mines, NTIS Report Dated 4-25-88, pp. 19-40 (1988).

30. Mankosa, M.J., Adel, G.T., Luttrell, G.H., and Yoon, R.H., "Model-Based Design of Column Flotation," in Proceedings of the 1987 Extractive and Process Metallurgy Fall Meeting on the Mathematical Modeling of Metals Processing Operations, Palm Springs, California, November 29-December 2, 1988, AIME, New York, pp. 219-233 (1988).

31. Mielczarski, J., and Yoon, R.H., "Spectroscopic Analysis of Collector Adsorption," in Proceedings of the Engineering Foundation Conference, January 10-15, 1988, Palm Coast, Florida; Flocculation and Dewatering, B. . Moudgil and B.J. Scheiner, eds., United Engineering Trustees, Inc., New York, pp. 619-630 (1989).

32. Adel, G.T., Wang, D., and Yoon, R.H., "Image Analysis Characterization of Coal Flotation Products," Advances in Coal and Mineral Processing Using Flotation, S. Chander, ed., Society of Mining Engineers, Inc., Littleton, Colorado, Chapter 5, pp. 45-53 (1989).

33. Yoon, R.H., Luttrell, G.H., Adel, G.T., and Mankosa, M.J., "Recent Advances in Fine Coal Flotation," Advances in Coal and Mineral Processing Using Flotation, S. Chander, ed., Society of Mining Engineers, Inc., Littleton, Colorado, Chapter 23, pp. 211-218 (1989).

34. Mielczarski, J., and Yoon, R.H., "Orientation of Thiol Collectors on Chalcocite," Processing of Complex Ores, (Proceedings of the International Symposium), G.S. Dobby and S.R. Rao, eds., Pergamon Press, New York, pp. 29-40 (1989).

35. Nagaraj, D., Basilio, C.I., and Yoon, R.H., "The Chemistry and Structure-Activity Relationships for New Sulfide Collectors," Processing of Complex Ores, G.S. Dobby and S.R. Rao, eds., Pergamon Press, New York, pp. 157-166 (1989).

36. Paul, A.D., and Yoon, R.H., "Electrocatalytically-Induced Liberation of Mineral Matter from Coal," presented at Third International Conference on Processing and Utilization of High Sulfur Coals, Ames, Iowa, November 14-17, 1989; Processing and Utilization of High-Sulfur Coals III, R.

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Markuszewski and T.D. Wheelock, eds., Coal Science and Technology 16, Elsevier, Amsterdam, pp. 119-131 (1990).

37. Mankosa, M.J., Adel, G.T., Luttrell, G.H., and Yoon, R.H., "Modeling of Column Flotation with a View Toward Scale-Up and Control," 119th Annual SME Meeting, Salt Lake City, Utah, February 26-March 1, 1990; Control '90, K. Rajamani, ed., SME, Inc., Littleton, Colorado, Chapter 5, pp. 35-41 (1990).

38. Celik, M.S., Stallard, M.L., and Yoon, R.H., "Coal Desulfurization by a Novel Pyrite Depressant in Froth Flotation," in Proceedings of the III International Mineral Processing Symposium, Istanbul, Turkey, 1990, pp. 257-266 (1990).

39. Yoon, R.H., Basilio, C.I., and Stallard, M.L., "Microbial Removal of Ash from Coal," in Proceedings of the 1st International Symposium on the Biological Processing of Coal, Orlando, Florida, May 1-3, 1990, pp.3-79 to 3-97 (1990).

40. Yoon, R.H., Adel, G.T., Luttrell, G.H., and Mankosa, M.J., "Pilot-Scale Testing of Microbubble Column Flotation," in Proceedings of the 11th International Coal Preparation Congress, Tokyo, Japan, October 1990, pp. 277-282 (1990).

41. Luttrell, G.H., and Yoon, R.H., "A Flotation Column Simulator Based on Hydrodynamic Principles," in Proceedings of the 2nd Workshop on Flotation in Sulphide Minerals, Lulea, Sweden, June 18-21, (1991)

42. Yoon, R.H., Luttrell, G.H., and Adel, G.T., "In-Plant Testing of Microbubble Column Flotation," in Proceedings of the 7th Annual Coal Preparation, Utilization, and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 15-18, 1991, pp. 424-431 (1991).

43. Yoon, R.H., Lagno, M.L., Luttrell, G.., and Mielczarski, J. A., "On the Hydrophobicity of Coal Pyrite," in Proceedings of The 4th International Conference on Processing and Utilization of High Sulfur Coals, Idaho Falls, Idaho, August 26-30, 1991, pp. 241-253 (1991).

44. Yoon, R.H., "Hydrodynamic and Surface Forces in Bubble-Particle Interactions," in Proceedings of the XVII International Mineal Processing Congress, Dresden, Germany, September 23-28, 1991, pp. 17-31; Aufbereitungs-Technik, vol.32, no. 9, pp. 474-485 (1991).

45. Laskowski, J.S., Xu, Z., and Yoon, R.H., "Energy Barrier in Particle-Bubble Attachment and Its Effect on Flotation Kinectics," in Proceedings of the XVII International Mining Processing Congress, Dresden, Germany, September 23-28, 1991, pp. 237-249 (1991).

46. Yoon, R.H., Honaker, R.Q., and Luttrell, G.H., "Application of the Selective Hydrophobic Coagulation Process for Upgrading Carbonaceous Materials," in Proceedings of the Symposium on Physicochemical Problems of Mineral Processing, Sobotka, Poland, September 30-October 2, 1991, vol. 24, pp. 33-35 (1991).

47. Adel, G.T., Wang, D., and Yoon, R.H., "Washability Characterization of Fine Coal," in Proceedings of the Eighth Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, October 14-18, 1991, pp. 204-209 (1991).

48. Luttrell, G.H., Mankosa, M.J., and Yoon, R.H., "Development Of The MicrocelTM Technology," in Proceedings of the Eighth Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, October 14-18, 1991, pp. 247-253 (1991).

49. Paul, A.D., Basilio, C.I., Choung, J.W., and Yoon, R.H., "Parametric Testing of the Electrocatalytically Induced Liberation Process," in Proceedings of the 8th Annual Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, October 14-18, 1991, pp. 1129-1134 (1991).

50. Luttrell, G.H., Mankosa, M.J., and Yoon, R.H., "Column Flotation: An Effective Method for Improving Fine Coal Quality," in Proceedings of the American Filtration Society 1991 National Meeting, College Park, Georgia, October 20-23, 1991, pp. 148-151 (1991).

51. Adel, G.T., Mankosa, M.J., Luttrell, G.H., and Yoon, R.H., "Full-Scale Testing of Microbubble Column Flotation," in Proceedings of the Column '91, International Conference on Column Flotation, Sudbury, Ontario, Canada, June 2-6, pp. 263-274 (1991).

52. Luttrell, G.H., Mankosa, M.J., and Yoon, R.H., "Commercial Development of the MICROCEL Flotation Column," in Proceedings of the 8th Korea/U.S. Joint Workshop on Coal Utilization Technology, Seoul, Korea, October 29-31, vol. IV, pp. 43-53 (1991).

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53. Basilio, C.I., Yoon, R.H., and Paul, A.D., "Selective Liberation of Mineral Matter From Coal by Osmotic Pressure," Comminution - Theory and Practice, K. Kawatra, ed., Society for Mining, Metallurgy, & Exploration, Inc., Littleton, Colorado, Chapter 3, pp. 31-44 (1992).

54. Yoon, R.H., Mankosa, M.J., and Luttrell, G.H., "Improving Fine Particle Flotation using Microbubbles," in Proceedings of the 65th Annual Meeting of the Minnesota Section of SME and the 53rd Annual Mining Symposium at the University of Minnesota, Duluth, Minnesota, January 14-16, pp. 207-218 (1992).

55. Yotsumoto, H., and Yoon, R.H., "Developing an Extended DLVO Theory for the Stability of Silica and Rutile Suspension," in Proceedings of the Engineering Foundation Conferences: Dispersion and Aggregation: Fundamentals and Applications, Palm Coast, Florida, March 15-20, pp. 537-550 (printed in 1994) (1992).

56. Pugh, R.J., Aksoy, S., and Yoon, R.H., "Hydrophobicity and Rupture of Fine Aqueous Films," in Proceedings of the Engineering Foundation Conferences: Dispersion and Aggregation: Fundamentals and Applications, Palm Coast, Florida, March 15-20, 1992, pp. 141-144, (printed in 1994) (1992).

57. Schimoller, B, Luttrell, G.H., and Yoon, R.H., "Modeling of Bubble-Particle Aggregation," in Proceedings of the Engineering Foundation Conference on Dispersion and Aggregation: Fundamentals and Application, Palm Coast, Florida, March 15-20, 1992, pp. 537-550, (printed in 1994) (1992).

58. Luttrell, G.H., and Yoon, R.H., "Methods for Improving Sulfur Rejection in Fine Coal Flotation Circuits," in Proceedings of the International Coal Preparation Exhibit and Conference, Cincinnati, Ohio, May 5-7, 1992, pp. 126-137 (1992).

59. Yoon, R.H., and Basilio, C.I., "Mechanism of Thionocarbamate Interaction in Flotation Systems," in Proceedings of 3rd Int. Symposium on Electrochemistry in Mineral and Metal Processing III, R. Woods and P.E. Richardson, eds., The Electrochemical Society, Inc., St. Louis, Missouri, May 17-22, pp. 79-94 (1992).

60. Nagaraj, D.R., Basilio, C.I., Yoon, R.H., and Torres, C., "The Mechanism of Sulfide Depression with Functionalized Synthetic Polymers," in Proceedings of 3rd Int. Symposium on Electrochemistry in Mineral and Metal Processing III, R. Woods and P.E. Richardson, eds., The Electrochemical Society, Inc., St. Louis, Missouri, May 17-22, pp. 108-128 (1992).

61. Woods, R., Basilio, C.I., Kim, D.S., and Yoon, R.H., "Interaction of Ethyl Xanthate with Silver/Gold Alloys," in Proceedings of 3rd Int. Symposium on Electrochemistry in Mineral and Metal Processing III, R. Woods and P.E. Richardson, eds., The Electrochemical Society, Inc., St. Louis, Missouri, May 17-22, 1992, pp. 129-145 (1992).

62. Richardson, P.E., Li, Y., and Yoon, R.H., "The Photoelectrochemistry of in Situ Fractured Pyrite Electrodes," in Proceedings of 3rd Int. Symposium on Electrochemistry in Mineral and Metal Processing III, R. Woods and P.E. Richardson, eds., The Electrochemical Society, Inc., St. Louis, Missouri, May 17-22, 1992, pp. 342-353 (1992).

63. Luttrell, G.H., and Yoon, R.H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," in Proceedings of the Eighth Annual Coal Preparation, Utilization and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 27-30, 1992, pp. 390-398 (1992).

64. Yoon, R.H., and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," in Proceedings of Eighth Annual Coal Preparation, Utilization and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 27-30, 1992, pp. 446-453 (1992).

65. Yoon, R.H., "Advances in the Science and Technology of Flotation," Plenary Lecture, in Proceedings of the III Meeting of the Southern Hemisphere on Mineral Technology/XV Brazilian Meeting on Mineral Processing and Hydrometallurgy, Flotation: Fundamental, Practice and Environment, Sao Lourenco, Minas Gerais, Brazil, September 13-16, 1992, pp. 3-18 (1992).

66. Yoon, R.H., "Advances in Fine Particle Flotation: Microbubble Flotation," Plennary Lecture, in Proceedings of the 1st Int. Conference on Modern Process Mineralogy and Mineral Processing, Beijing, China, September 22-25, 1992, pp. 808-813 (1992).

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67. Luttrell, G.H., and Yoon, R.H., "Improving Sulfur Rejection in Coal Flotation," in Proceedings of the 9th U.S.-Korea Joint Workshop on Coal Utilization Technology, San Francisco, California, October 18-20, 1992, pp.201-210 (1992).

68. Adel, G.T., Chandler, M.A., and Yoon, R.H., "Phosphate Analsis by Optical Image Processing: Sensor Development and In-Plant Testing," Proceedings for the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18, 1993, Chapter 20 (1993).

69. Richardson, P.E., Beghardt, J.E., and Rice, D.A., and Yoon, R.H., "Electrochemical Control of Sulfide Flotation Circuits," Proceedings of the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18, 1993, chapter 32, pp. 307-317 (1993).

70. Luttrell, G.H., Mankosa, M.J., and Yoon, R.H., "Combining Advanced Flotation and Centrifugal Gravity Separation for Improved Sulfur Rejection," in Proceedings of the 10th Annual Coal Prep, Exhibition and Conference, Lexington, Kentucky, May 4-6, 1993, pp. 73-81 (1993).

71. Basilio, C.I., and Yoon, R.H., "Adsorption of Thiol Collectors on Sulfide Minerals and Precious Minerals--A New Perspective," in Proceedings of the XVIII Int'l Mining Processing Congress, Sydney, Australia, May 23-28, 1993, vol. 3, pp. 611-617 (1993).

72. Luttrell, G.H., Mankosa, M.J., and Yoon, R.H., "Design and Scale-up Criteria for Column Flotation," in Proceedings of the XVIII Int'l Mining Processing Congress, Sydney, Australia, May 23-28, 1993, vol. 3, pp. 785-791 (1993).

73. Richardson, P.E., Li, Y., and Yoon, R.H., "The Photoelectrochemistry of Pyrite and Galena," in Proceedings XVIII International Minerals Processing Conference, Sydney, Australia, May 23-28, 1993, Vol. 3, pp. 757-766 (1993).

74. Schimmoller, B.K., Luttrell, G.H., and Yoon, R.H., "A Combined Hydrodynamic Surface Force Model for Bubble-Particle Collection," in Proceedings of the XVII International Mineral Processing Congress, Sydney, Australia, May 23-28, 1993, vol. 3, pp. 751-756 (1993).

75. Yoon, R.H., and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," in Proceedings of Ninth Annual Coal Preparation, Utilization and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 19-22, 1993, pp. 72-80 (1993).

76. Yoon, R.H., Luttrell, G.H., and Mankosa, M.J., "Bench-scale Testing of the Multi-gravity separator in Combination with MicrocelTM," in Proceedings of Ninth Annual Coal Preparation, Utilization and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 19-22, 1993, pp. 23-30 (1993).

77. Yoon, R.H., Luttrell, G.H., Adel, G.T., and Richardson, P.E.,"Development of Enhanced Sulfur Rejection Process," in Proceedings of Ninth Annual Coal Preparation, Utilization and Environmental Control Contractors Conference, Pittsburgh, Pennsylvania, July 19-22, 1993, pp. 112-119 (1993).

78. Richardson, P.E., and Yoon, R.H., "A Comparison of the Semiconducting Properties of Abraded and Fractured Sulfide Electrodes: Pyrite and Galena," in Proceedings of IV International Symposium of Hydrometallurgy, Salt Lake City, Utah, August 1-5, 1993, chapter 6, pp. 101-117 (1993).

79. Mehta, R.K., Dieudonne, V., and Yoon, R.H., "Optimization of a Chemical Coal Cleaning Process via Simple Genetic Algorithm," in Proceedings of IV International Symposium of Hydrometallurgy, Salt Lake City, Utah, August 1-5, 1993, chapter 39, pp. 629-643 (1993).

80. Davis, V.L., Bethell, P.J., Stanley, F., Luttrell, G.H., Mankosa, M.J., and Yoon, R.H.,"Application of MicrocelTM Column Flotation Technology for Fine Coal Recovery," in the Proceedings of the 10th Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 20-24, 1993, pp. 90-95 (1993).

81. Yoon, R.H., "Application of Mineral Processing Techniques in Recycling," in Proceedings of the 2nd International Symposium on East Asian Resources Technology, Seoul, Korea, October 13-17, 1993, pp. 1-11(1993).

82. Tao, D.P., Richardson, P.E., Luttrell, G.H., and Yoon, R.H., "An Electrochemical Investigation of Surface Reactions of Coal and Mineral-Pyrite in Aqueous Solutions," in Proceedings of the 5th

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International Conference on Processing and Utilization of High Sulfur Coals, Lexington, Kentucky, October 24-28, 1993, pp. 219-236 (1993).

83. Yoon, R.H., Luttrell, G.H., and Mankosa, M.J., "A Method of Improving Sulfur Rejection by Combining Flotation and Fine Gravity Separation," in Proceedings of the 5th International Energy Conference, Seoul, Korea, October 18-22, 1993, vol. 1, pp. 1-9 (1993).

84. Yoon, R.H. and Luttrell, G.H., "Column Flotation - A Review," in Proceedings of the Engineering Foundation Conference, Palm Coast, Florida, December 5-10, 1993, Chapter 37, pp. 361-369(1993).

85. Yordan, J.L., Yoon, R.H., and Hilderbrand, T., "Hydroxamate vs. Fatty Acid Flotation for the Beneficiation of Georgia Kaolin," in Proceedings for the SME Annual Meeting and Exhibit, Albuquerque, New Mexico, February 14-17, 1994, Chapter 22, pp. 215-224 (1994).

86. Luttrell, G.H., Venkatraman, P., and Yoon, R.H., "Development of a Combined Flotation/Gravity Separation Circuit for Fine Coal Cleaning," in Proceedings of the 12th International Coal Preparation Congress, Krakow, Poland, May 23-27, 1994, pp. 335-343 (1994).

87. Luttrell, G.H., and Yoon R.H., "MicrocelTM Spargers: Scale-Up and Plant Practice," in Proceedings of Canadian Mineral Processors Congress, Ottawa, Ontario, Canada, January 18-20, 1994, Paper No. 12 (1994).

88. Luttrell, G.H., and Yoon, R.H., "Advanced Froth Flotation Techniques for Fine Coal Cleaning," in Proceedings of 19th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, Florida, March 21-24, 1994, pp. 793-803 (1994).

89. Lu, M.X., Tao, D.P., Richardson, P.E., Luttrell, G.H., Adel, G.T., and Yoon, R.H., "New Flotation Schemes for Enhanced Pyrite Rejection," in Proceedings of the Tenth Annual Coal Preparation, Utilization, and Environmental Control Contractors Conference, July 18-21, 1994, pp. 93-100 (1994).

90. Venkatraman, P., Luttrell, G.H., Yoon, R.H., "Fine Coal Cleaning Using the Multi-Gravity Separator," in Proceedings for the SME Annual Meeting and Exhibit- High Efficiency Coal Preparation Conference, Denver, Colorado, February, 1995, pp. 109-117 (1994).

91. Luttrell, G.H. and Yoon, R.H., "Commercialization of the MicrocelTM Column Flotation Technology," in Proceedings for the Eleventh Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 12-16, 1994, 1503-1508 (1994).

92. R.H. Yoon, Lu, M.X., Tao, D.P., Richardson, P.E. and Luttrell, G.H., "Enhanced Pyrite Rejection in Coal Flotation," in Proceedings for the Eleventh Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 12-16, 1994, pp. 891-896 (1994).

93. Luttrell, G.H., P. Venkatraman, P., and Yoon, R.H., "Combining Flotation and Enhanced Gravity Separation for Improved Ash and Sulfur Rejection," in Proceedings for the Eleventh Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 12-16, 1994, pp. 1273-1278 (1994).

94. Yoon, R.H., Luttrell, G.H., Venkatraman, P., "Integrated Approach for Pyrite Rejection from Fine Coal," in Proceedings for the Tenth Korea-U.S.A. Joint Workshop on Coal Utilization Technology, Taejon, Korea, October 18-19, 1994, pp. (V-17)-(V-28) (1994).

95. Yoon, R.H., Luttrell, G.H., Venkatraman, P., "Precombustion Desulfurization Using MicrocelTM and Multi-Gravity Separator," in Proceedings for the U.S./Korea Electric Power Technologies Seminar Mission, Seoul, Korea, October 24-28, (1994).

96. Richardson, P.E., Finkelstein, N., Chen, Z., Yoon, R. H., “Electrochemistry of Copper-Activated Sphalerite,” in Proceedings of the XIX International Mineral Processing Congress, (ed. by J. A. Herbst), Society for Mining, Metallurgy, and Exploration, Inc., San Francisco, California, vol. 3, pp. 297-302; presented October 23-27, 1995, San Francisco, California (1995).

97. Yoon, R.H., Basilio, C.I., Marticorena, M.A., Karr, A.N., and Stratton-Crawley, R., “Studies of the Pyrrhotite Depression Mechanism with Diethylenetriamine,” in Proceedings of the XIX International Mineral Processing Congress, (ed. by J. A. Herbst), Society for Mining, Metallurgy, and Exploration, Inc., San Francisco, California, vol. 3, pp. 275-284; presented October 23-27, 1995, San Francisco, California (1995).

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98. Venkatraman*, P., Luttrell, G.H., Yoon, R.H., Knoll, F.S., Kow. W.S. and Mankosa, M.J., “Fine Coal Cleaning Using the Multi-Gravity Separator,” in High Efficiency Coal Preparation - An International Symposium, S.K. Kawatra (Ed.), SME-AIME Annual Meeting, Denver, Colorado, March 5-9, pp. 109-118 (1995).

99. Yoon, R.H., Guzonas, D., Aksoy*, B.S., Czarnecki, Y., and Leung, A., “Role of Surface Forces in Tar Sand Processing,” in Processing of Hydrophobic Minerals and Fine Coal, Proceedings of the 1st UBC-McGill Bi-annual International Symposium, (J.S. Laskowski and G.S. Poling), Canadian Institute of Mining, Metallurgy and Petroleum, Vancouver, B.C., Canada, pp. 277-289; presented August 19-24, Vancouver, B.C. (1995).

100. Ravishankar*, S.A. and Yoon, R.H., “The Role of Hydrophobic Forces in Amine Flotation of Silica,” in Mineral Processing: Recent Advances and Future Trends, (S.P. Mehrotra and R. Shekhar, eds.), Allied Publishers, Ltd., New Delhi, India, pp. 105-117; presented December 11-15, 1995, Kanpur, India (1995).

101. Luttrell, Gerald H., Parthasarathy Venatraman and Yoon, R.H., “Development of a Combined Flotation/Gravity Separation Circuit for Fine Coal Cleaning,” Proceedings of the 12th International Coal Preparation Congress, Cracow, Poland, May 23-27, 1994, pp. 217-222 (1996).

102. Schoenherr, J.I. and Yoon, R.H., “Neue Erkenntnisse Auf Dem Gebiet Der Kolonnen-Flotation,” Proceedings of the BHT ’95 Kolloquium 8, June 14-17, 1995, pp. V28/1-V28/11 (1996).

103. Kartio, I.J., Basilio, C.I., Yoon, R.H., “An XPS Study of Sphalerite Activation by Copper,” Proceedings of the 189th Electrochemical Society Meeting, Los Angeles, CA, May 5-10, pp. 25-37 (1996).

104. Yoon, R.H., Chen, Z., “Electrochemical Aspects of Copper-Activation of Sphalerite,” Proceedings of the 189th Electrochemical Society Meeting, Los Angeles, CA, May 5-10, 1996, pp.38-47 (1996).

105. Basilio, C.I., Kartio, I.J and Yoon, R.H., “Lead Activation of Sphalerite during Galena Flotation,” Proceedings, 189th Electrochemical Society Meeting, Los Angeles, CA May 5-10, 1996, pp. 48-60 (1996).

106. Mendiratta, N.K., Yoon, R.H., Richardson, P.E., “Electrochemical Impedance Spectroscopy of Freshly Fractured and Polished Pyrite Electrodes,” Proceedings of the 189th Electrochemical Society Meeting, Los Angeles, CA, May 5-10, 1996, pp.155-166 (1996).

107. Yoon, R.H., Tao, D.P., Lu, M.X., Richardson, P.E., and Luttrell, G.H., “Improving Pyrite Rejection by Galvanic Control,” Proceedings of the 189th Electrochemical Society Meeting, Los Angeles, CA, May 5-10, 1996, pp. 167-178 (1996).

108. Richardson, P.E., Chen, Z., Tao, D.P., Yoon, R.H., “Electrochemical Control of Pyrite-Activation by Copper,” Proceedings of the 189th Electrochemical Society Meeting, Los Angeles, CA, May 5-10, 1996, pp.179-190 (1996).

109. Luttrell, G.H., Yoon, R.H., and Toro, H.C., “El Sistema de Generacion de Burbujas papa Celdas de Columna: Microcel,” Proceedings, 2nd Simposio Internacional de Mineralurgia, Lima, Peru, October 23-25, 1996, 13 pp. (1996).

110. Yoon, R.H., Luttrell, G.H. and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Proceedings of the First Joint Power & Fuels Systems Contractors Conference, Coal Preparation Session, Pittsburgh, PA, July 9-11, 1996, 7pp. (1996).

111. Brake, I., Eldridge, G., Luttrell, G. and Yoon, R.H., “The Design of Industrial Microcel Sparging Systems,” Proceedings of the International Symposium on Column Flotation, Montreal, Quebec, August 26-28, 1996, pp. 13-23. (1996).

112. Luttrell, G.H., Yoon, R.H. and H., Toro, “El Sistema De Deneracion De Burbujas Para Celdas De Columna: Microcel,” Proceedings of the 2nd International Symposium of Mineralogy, Lima-Peru, October 23-25, (1996).

113. Yoon, R.H., Chen, X, Nagaraj, D.R., “Comparison of Different Pyrrhotite Depressants in Pentlandite Flotation,” in Processing of Complex Ores: Mineral Processing and the Environment, Proceedings of the 2nd UBC-McGill Bi-Annual International Symposium on Fundamentals of Mineral Processing and the Environment, Sudbury, Ontario, August 17-19, 1997, pp. 91-100 (1997).

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114. Yoon, R.H., Chen, Z., “Electrochemical Studies of Copper Activated Sphalerite at pH 9.2,” Processing of Complex Ores: Mineral Processing and the Environment, Proceedings of the 2nd UBC-McGill Bi-Annual International Symposium on Fundamentals of Mineral Processing and the Environment, Sudbury, Ontario, August 17-19, 1997, pp. 143-152 (1997).

115. Yoon, R.H., Pazhianur, R., “Direct Force Measurement for Sulphide Mineral Flotation System,” Processing of Complex Ores: Mineral Processing and the Environment, Proceedings of the 2nd UBC-McGill Bi-Annual International Symposium on Fundamentals of Mineral Processing and the Environment, Sudbury, Ontario, August 17-19, 1997, pp. 247-256 (1997).

116. Yoon, R.H., Chen, Z., Mendiratta, N.K., “The Role of Ferric Ions in the Adsorption of Xanthate on Activated Sphalerite,” Processing of Complex Ores: Mineral Processing and the Environment, Proceedings of the 2nd UBC-McGill Bi-Annual International Symposium on Fundamentals of Mineral Processing and the Environment, Sudbury, Ontario, August 17-19, 1997, pp. 273-282( 1997).

117. Yoon, R.,H., Askoy, B. Suha, “Hydrophobicity of Air-bubbles in Water,” Proceedings of the XX International Mineral Processing Congress: Flotation and other Physical-Chemical Processes, Achen, Germany, September 21-26, 1997, vol. 3, pp107-118 (1997).

118. Yoon, R.H., Pazhianur, R., Richardson, P.E., “Reducing Corrosive Wear of Liners by Cathodic Protection,” Proceedings of the XX International Mineral Processing Congress: Communication, Classification, Agglomeration, Physical Enrichment, Achen, Germany, September 21-26, 1997, vol. 2, pp. 229-240 (1997).

119. Yoon, R.H., Yan, E.S., Hangsubcharoen, M., Chandrasekhar, P., Li, G., Luttrell, G.H., Adel, G.T., “POC-Scale Testing of a Triboelectrostatic Separator for Fine Coal Cleaning,” Proceedings, Coal Liquefaction and Solid Fuels Contractors Review conference, Pittsburgh, Pennsylvania, September 3-4, 1997, 6 pp. (1997).

120. Luttrell, G.H., Yoon, R.H., Adel, G.T., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Proceedings, Coal Liquefaction and Solid Fuels Contractors Review Conference, Pittsburgh, Pennsylvania, September 3-4, 6 pp. (1997).

121. Phillips, D. I., Yoon, R.H., Luttrell, G. H., Fish, L., Toney, A., “Installation of 4-Meter Diameter Microcel Flotation Columns at LadyDunn Preparation Plant,” Proceedings of the 14th International Coal Preparation Exhibition & Conference, Lexington, KY, April 29-May 1, pp.115-123 ( 1997).

122. Yoon, R.H., Phillips, D.I. and Luttrell, G.H., “Industrial Applications of Advanced Fine Coal Cleaning and Dewatering Technologies,” Proceedings of the XIII International Coal Preparation Congress, Brisbane, Australia, October 4-10, vol. I, p. 407-416, (1998).

123. Yoon, R.H., Rabinovich, Ya., “Role of Asphaltene Polymers in the Processing of Tar Sand,” Proceedings of the Symposium on Polymers in Mineral Processing, Quebec Canada, 38th Conference of Metallurgists, August 22-26, pp.247-261 (1999).

124. Yoon, R.H., “Surface Forces in Bubble-Particle Interactions,” in Advances in Flotation Technology: Proceedings of Special Symposium Honoring Professor, M.C. Fuerstenau, p. 95-112 (1999).

125. Benvindo da Luz, A., Yildirim, I., Yoon, R.H.,“Purification of Brasilian Kaolin Clay by Flotation,” Proceedings of the XXII International Mineral Processing Congress, Rome, Italy, July 23-29, 2000; pp. C8b-79-83 (2000).

126. Yoon, R.H.,"The Role of Surface Forces in Flotation Kinetics," Proceedings of the XXII International Mineral Processing Congress, Rome, Italy, July 23-29; pp. B8a-1-7 (2000).

127. Yoon, R.H., Phillips, D.I., and Luttrell, G.H., “Applications of Advanced Fine Coal Cleaning and Dewatering Technologies,” Proceedings, 7th Asia-Pacific Economic Cooperation (APEC) Clean Fossil Energy Technical Seminar, APEC Experts Group on Clean Fossil Energy, Chapter VI (3), Taipei, China, March 7-8, 10 pp. (2000).

128. Yoon, R.H., "Application of Mineral Processing Techniques for Recycling," Proceedings of the TAPPI Recycling Symposium, Washington, DC, March 5-8; pp. 33-45 (2000).

129. Mendiratta and, N.K., R.H.Yoon, “Activation Energies for the Adsorption of Potassium Ethylxanthate on Sulfide Minerals from Tafel Studies,” Proceedings of the Electrochemistry of Minerals and

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Metallurgical Processing, edited by F.M. Doyle and R. Woods, The Electrochemical Society, Inc., p. 47 (2000).

130. Chen, Z, and Yoon R.H., “Electrochemistry of Copper Activation of Sphalerite and Xanthate Adsorption,” Proceedings of the Electrochemistry of Minerals and Metallurgical Processing, edited by F.M. Doyle and R. Woods, The Electrochemical Society, Inc., pp. 96-106 (2000).

131. Mendiratta, N.K., Yoon, R.H., and Wilson, S.W., “Effects of Diethylenetriamine and Sulfur Dioxide on Pyrrhotite Depression,” Proceedings of the Electrochemistry of Minerals and Metallurgical Processing, edited by F.M. Doyle and R. Woods, The Electrochemical Society, Inc., pp. 62-71 (2000).

132. Yoon, R.H., Asmatulu, R., and Luttrell, G.H., “Development of Novel Fine Coal Dewatering Aids,” Proceedings of the 18th International Coal Preparation Exhibition and Conferences, Coal Prep, pp. 113-122 (2001).

133. Yoon, R.H., Asmatulu*, R., and Luttrell, G.H., “Technical and Economic Benefits of Using Advanced Coal Cleaning Technologies,” Proceedings, U.S. - China Clean Energy Technology Forum, August 28 – September 1, Beijing, China, 10 pp. (2001).

134. Yoon, R.H., Yan, E., Han, O.H, Park, B.W., “Application of Electrostatic Separator for Fly Ash Recycling,” Proceedings of the 6th International Symposium on East Asian Resources Recycling Technology, October 23-25, p.644-649 (2001).

135. Yoon, R.H., Asmatulu, R., B. Basim, Luttrell, G.H., and A. Walters, “Pilot-scale testing of Novel Dewatering Aids,” XIV International Coal Preparation Congress and Exhibion, The South African Coal Processing Society and the South African Institute of Mining and Metallurgy, Symposium Series S29, March 11-15, pp. 467-472 (2002).

136. Yoon, R.H., Asmatulu, R., and Luttrell, G.H. “Extending the Upper Particle Size Limit for Flotation,” XIV International Coal Preparation Congress and Exhibion, The South African Coal Processing Society and the South African Institute of Mining and Metallurgy, Symposium Series S29, March 11-15, pp. 445-450 (2002).

137. Yoon, R.H., “Recent Development in Plastics Recycling in the U.S.” Proceedings, Seoul International Symposium on Establishment of Resources Recycling Society: Waste Recycling, Today and Tomorrow, October 1-2, Seoul, Korea, pp. 39-45 (2002).

138. Flinn, D.H. and Yoon, R.H ,“Surface Forces in Quartz-Amine Flotation Systems,” in Proceedings, Conference on Flotation and Flocculation: from Fundamentals to Applications, Hawaii, July 28-August 4, 8 pages (2002).

139. Yoon, R.H., Luttrell, G.H., Henry, C.D., and Jamison, P.R., “Use of Advanced Separation Technologies for Sustainable Mining,” Proceedings, International Conference on Sustainable Development Indicators in the Minerals Industry (SDIMI 2003), May 21-23, 2003, Milos Conference Center – George Eliopoulos, Milos, Greece, 8 pp. (2003).

140. Yoon, R.H., Zhang, J., Eryadin, M.K. and Luttrell, G.H., “Development of Advanced Fine Coal Dewatering Technologies,” Proceedings, 21st Annual International Pittsburgh Coal Conference – Coal, Energy and the Environment, Osaka, Japan, September 13-17, 2004, Paper 6-2, 9 pp. (2004).

141. Honaker, R.Q., Luttrell, G.H., and Yoon, R.H., “Upgrading of Carbonaceous Materials Using Selective Hydrophobic Coagulation,” Proceedings, 5th UBC-McGill International Symposium on Fundamentals of Mineral Processing, Particle Size Enlargement, 43th Annual Conference of Metallurgists (COM 2004), Hamilton, Ontario, Canada, August 22-25, 15 pp. (2004).

142. Wang, L. and Yoon, R.H., “Hydrophobic Interactions between the Air Bubbles in Water”, in Proceedings of the Symposium Entitled, “Innovations in Natural Resource Processing” (ed. Courtney A. Young et al.), Society for Mining, Metallurgy, and Exploration, Inc., pp.125-137. (2005).

143. Asmatulu, R. Zhang, J., Yoon, R.H., Hull, C., Kerr, M., Khan, S., Lampinen, P., Brodin, P., and Bolin, N.-J., “Novel Dewatering Aids for Mineral Concentrates and Coal,” Proceedings, 37th annual Meeting of the Canadian Mineral Processors, Ottawa, Ontario, Canada, January 18-20, p. 665. (2005).

144. Zhang, J., Yoon, R.H., Mao, M. and Ducker, W.A., "Effect of Dissolved Gas on the Force between Silica and Glass in Aqueous Ocyadecyltrimetylammonium Chloride Solutions", Proceedings of the Centenary of Flotation Symposium, Brisbane Australia, June 5-9, p. 659 (2005).

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145. Schimann, H.C.R. and Yoon, R.H., "Direct Force Measurement for Bubble-Particle Detachment", Proceedings of the Centenary of Flotation Symposium, Brisbane Australia, June 5-9, pp. 591 (2005).

146. Wang, L. and Yoon, R.H., “Hydrophobic Interactions between the Air Bubbles in Water”, in: Courtney A. Young et al. (eds.), Innovations in Natural Resource Processing-Proceedings of the Jan D. Miller Symposium, Society for Mining, Metallurgy, and Exploration, pp.125 (2005).

147. Sherrell, I. and Yoon, R.H., “Development of a Turbulent Flotation Model,” by, Proceedings of the Centenary of Flotation Symposium, Brisbane, Australia, June 6-9, p.611 (2005).

148. Brady, M.R., Telionis, D.P., Vlachos, P.P., and Yoon, R.H. “Velocities of Particles and Bubbles in Grid Turbulence Measured by Particle Image Velocimetry,” by, Proceedings of the Centenary of Flotation Symposium, Brisbane, Australia, June 6-9, p.407 (2005).

149. Lobato, E. Zhang, J., Yildirim, I., and Yoon, R.H., “Characterization of Surface Free Energies of Talc Powders Using Thin Layer Wicking Technique,” Composite Materials, (Kellar, J., Ed.), pp. 101-114 (2006).

150. Yoon, R.H., “Flotation Model Development from First Principles,” Proceedings of the XXI Encontro Nacional Tratamento de Minerios e Metalurgia Extrativa, Natal, Brazil, Nov. 20-24, pp.1-20 (2005).

151. Wang, L. and Yoon, R.H., “Stability of Foams in the Presence of Ionic and Non-Ionic Surfactants”, Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey, September 3-8, pp. 453-458 (2006).

152. Do, H.S. and Yoon, R.H., “A Turbulent Flotation Model Derived from First Principles,” Proceedings of the XXIII International Mineral Processing Congress, Istanbul, Turkey, September 3-8, pp. 1825-1829 (2006).

153. Brady, M.R., Telionis, D.P., Vlachos, P.P. Yoon, R.H., “Velocities of particles and bubbles in grid turbulence measured by particle image velocimetry,” Proceedings of the Centenary of Flotation Symposium, Barisbane, Australia, pp. 407-414 (2005).

154. Do, H., Telionis, D.P., and Yoon, R.H., “Foam Drainage and Wetting: a Numerical Investigation, Proceedings of the 8th International Congress Fluid Dynamics and Propulsion, Sinai, Egypt, ICFDP8-EG-170, 6p. (2006).

155. Vlachakis, V.N., Brady, M.R., Yoon, R.H., Tellionis, D.P., Vlachos, P.P., “Turbulence Characteristics in a Rushtin Stirring Vessel: A Numerical Investigation,” Proceedings of FEDSM2006, 2006 ASME Joint U.S.-European Fluids Engineering Summer Meeting, July 17-20, Miami, Florida, 8p. (2006).

156. Zhang, J. and Yoon, R.H., “Hydrophobic Forces Mewasured between Silica Surfaces Coated with CnTACl Homologues,” in Interfacial Phenomena in Fine Particle Technology, Z. Xu and Q., Liu., Editors, Proceedings of the Sixth UBC-McGill-UA International Symposium on Fundamentals of Mineral Processing, Oct. 1-4, pp. 45-60 (2006).

157. Wang, L. and Yoon, R.H., “Effects of Surface Forces and Film Elasticity on Foam Stability,” in Interfacial Phenomena in Fine Particle Technology, Z. Xu and Q., Liu., Editors, Proceedings of the Sixth UBC-McGill-UA International Symposium on Fundamentals of Mineral Processing, Oct. 1-4, pp. 119-131(2006).

158. Eryadin, M.K., Salomon, J., Zhang, J., Luttrell, G.H. and Yoon, R.H., “Development of Advanced Fine Coal Dewatering Technologies,” Proceedings, XV International Coal Preparation Conference and Exhibition, Beijing, China, October 17-20, 575-583 (2006).

159. Yang, Y, Brady, M., Vlachos, P., Telionis, M.P., Yoon, R.H., and Weber, A. “Unsteady Flow and Turbulence in a Flotation Cell,” Proceedings of the Flotation-07 Symposium, October 6-9, (2007).

160. Do, H., Brady, M., Vlachos, P.P., Telionis, D.P., and Yoon, R.H., “Coarsening Foam – Numerical Modeling and Experimental Results,” Proceedings of the Flotation-07 Symposium, October 6-9, (2007).

161. Yoon, R.H. and Do, H., “A Predictive Flotation Model: Improving Coarse Particle Flotation,” Proceedings, International Conference on Beneficiation of Fines and Its Technology, December 10-11, Jamshedpur, India, pp. 115-122 (2007).

162. Yoon, R.H., Eryadin, M.K., and Luttrell, G.H., “Improving Fine Particle Dewatering Using Novel Dewatering Aids,” Proceedings, International Conference on Beneficiation of Fines and Its Technology, December 10-11, Jamshedpur, India, pp. 152-162 (2007).

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163. Yoon, R.H., Do,H.A, Sherrell, I, Zhang, J.M, Khan, S.U., Paulson, S., “Improving Coarse Particle Flotation,” keynote paper, XXIV International Mineral Processing Congress, Beijing, China, September 24-28, Proceedings, pp. 902(2008).

164. Wang, L.G, and Yoon, R.H., “Effect of Elasticity and Surface Forces on the Stability of Foams and Lamellae Films in the Presence of Flotation Frothers”, Proceedings of XXIV International Mineral Processing Congress, Beijing, China, September 24-28, pp. 1000 (2008).

165. Zhang, J.H., Yoon, R.H., ‘Surface Force Measurement between Oxide Surfaces in CnTACl Solution Using an Atomic Force Microscope”, Proceedings of XXIV International Mineral Processing Congress, Beijing, China, September 24-28, pp. 1019 (2008).

166. Eraydin,M., Keles, S, Smith,K., Luttrell, G.,Yoon, R.H., “Development of Advanced Dewatering Technologies”, Proceedings of XXIV International Mineral Processing Congress, Beijing, China, September 24-28, pp. 2107 (2008).

167. Wang, L., and Yoon, R.H., “Effects of Film Elasticity and Surface Forces on the Stability of Foams and Lamellae Films in the Presence of Non-ionic Surfactants”, Proceedings of the XVth International, Congress on Rheology: The Society of Rheology 80th Annual Meeting, AIP Conference Proceedings, Volume 1027, Monterey, California, U.S.A., August 3-8, p. 839 (2008).

168. Yoon, R.H., Keles, S. Luttrell, G.H., Estes, T., Schultz, W. and Bethell, P., “Development of the Centribaric Dewatering Technology,” Proceedings, XVI International Coal Preparation Congress (ICPC), April 25-30, Lexington, Kentucky, pp. 488-495 (2010).

169. Addison, C., Jones, R., Addison, F., Stanley, F., Luttrell, G.H., Bratton, R.C. and Yoon, R.H., “Development of a Multi-Stream Monitoring and Control System for Dense Medium Cyclones,” Proceedings, XVI International Coal Preparation Congress (ICPC), April 25-30, Lexington, Kentucky, pp. 306-312 (2010).

170. Wang, L. and Yoon, R.H., “Surface Forces Measured between Xanthate-Coated Gold Surfaces,” Electrochemistry in Minerals and Metal Processing VI, Vancouver, April 25-30 (2010).

171. Keles. S., Luttrell, G.H., Yoon, R.H., Eraydin, M.K., Schultz, W., “Taking Advantage of the Centribaric Technology: Split Dewatering of Fine Coal,” Paper 8A, Proceedings of the 13th Australian Coal Preparation Conference, Sept. 13-16, McKay, Australia, pp. 286-295 (2010).

172. Zhang,J, Eraydin, M.K., Khan, S.U., Crosbie, M.G., Liu, J.F. Luttrell, G.H., and Yoon, R.H., “Development of Specialty Collectors for Coal Flotation,” Paper 9C, Proceedings of the 13th Australian Coal Preparation Conference, Sept. 13-16, McKay, Australia, pp. 352-359 (2010).

173. Keles, S., Luttrell, G.H., Yoon, R.-H., and Schultz, W., 2011. “Development of a Novel Fine Particle Dewatering Centrifuge,” Proceedings, 28th Annual International Coal Preparation Exhibition and Conference, Penton Media, Lexington, Kentucky, May 3-5, 2011, 8 pp.

174. Seol, Y., Wang, J., Li, J., J.-H. Cha, and Yoon, R.-H., “Effect of Hydrophobic Surfaces on the Kinetics of Hydrate Formation,” Proceedings of the 7th International Conference on Gas Hydrates (ICGH 2011), Edinburgh, Scotland, United Kingdom, July 17-21, 2011, 5 pp.

175. Wang, J., Schlosser, C., Yoon, R.-H., Troya, D., and Seol, Y., “The Role of Acid-Base Interaction in the Formation of CO2 Hydrate,”, Proceedings of the 7th International Conference on Gas Hydrates (ICGH 2011), Edinburgh, Scotland, United Kingdom, July 17-21, 2011, 10 pp.

176. Kelley, K., Noble, A., Luttrell, G.H., and Yoon, R.-H., “Development of a Model-Based Simulator for Flotation,” in Separation Technologies for Minerals, Coal, and Earth Resources, edited by C.A. Young and G.A. Luttrell, Society of Mining Engineers, 2012, p. 699-708.

177. Yang, Y., Jung, S., Ma, J., and Yoon, R.-H, “Dynamics of Bubble-Particle Interaction,” in Separation Technologies for Minerals, Coal, and Earth Resources, edited by C.A. Young and G.A. Luttrell, Society of Mining Engineers, 2012, p. 27-35.

178. Wang, J., Yoon, R.-H., and Seol, Y., “Thermodynamics and Kinetics of CO2 Hydrate Formation,” in Separation Technologies for Minerals, Coal, and Earth Resources, edited by C.A. Young and G.A. Luttrell, Society of Mining Engineers, 2012, p. 347-356.

179. Pan, L., Jung, S., and Yoon, R.-H., “Kinetics of Thinning of the Wetting Films Formed on the Gold Surfaces Treated with Potassium Amyl Xanthate,” in Separation Technologies for Minerals, Coal, and Earth Resources, edited by C.A. Young and G.A. Luttrell, Society of Mining Engineers, 2012, p. 57-64.

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180. Asmatulu, R. and Yoon, R.-H., “Effect of Surface Forces on Dewatering of Fine Particles,” in Separation Technologies for Minerals, Coal, and Earth Resources, edited by C.A. Young and G.A. Luttrell, Society of Mining Engineers, 2012, p. 95-102.

Book

“Froth Flotation – A Century of Innovation,” by M.C. Fuerstenau, G. Jameson, and R.H. Yoon, Editors, Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO, pp.891, 2007.

Book Chapters

1. Yoon, R.H., and Luttrell, G. H., "The Effect of Bubble Size on Fine Particle Flotation," Frothing in Flotation: The Jan Leja Volume, Mineral Processing and Extractive Metallurgy Review, J. S. Laskowski, ed., Gordon and Breach Science Publishers Ltd., New York, chapter 4, vol. 5, pp. 101-122 (1988).

2. Luttrell, G.H., Weber, A.T., Adel, G.T., and Yoon, R.H., "Microbubble Flotation of Fine Coal," Column Flotation '88, K.V.S. Sastry, ed., Society of Mining Engineers, Inc., Littleton, Colorado, chapter 21, pp. 205-211 (1988).

3. Yoon, R.H., and Sabey, J. B., "Coal Flotation in Inorganic Salt Solutions," Interfacial Phenomena in Coal Technology, G. D. Botsaris and Y. M. Glazman, eds., Marcel Dekker, Inc., New York, chapter 3, pp. 87-114 (1989).

4. Yoon, R.H., Luttrell, G.H., and Adel, G.T., "Advances in Fine Particle Flotation," Challenges in Mineral Processing, K. V. S. Sastry and M. C. Fuerstenau, eds., Society of Mining Engineers, Littleton, Colorado, chapter 30, pp. 487-506 (1989).

5. Yoon, R.H., and Luttrell, G.H., "The Effect of Bubble Size on Fine Particle Flotation," Frothing in Flotation, J. S. Laskowski, ed., Gordon and Breach, pp. 101-122 (1990).

6. Yoon, R.H., "Advanced Coal Cleaning," Coal Preparation, J.W. Leonard III and B.C. Hardinge, eds., Society for Mining, Metallurgy, & Exploration, Inc., Littleton, Colorado, vol. 5, pp. 966-1005 (1991).

7. Basilio, C.I., Yoon, R.H., Paul, A.D., “Selective Liberation of Mineral Matter from Coal by Osmotic Pressure,” in Comminution - Theory and Practice, (Ed. by K. Kawatra), Society for Mining, Metallurgy and Exploration, Inc., Littleton, Colorado, Chapter 3, pp. 31-44 (1992).

8. Yoon, R.H., and Mao, L., “Predicting Flotation Rate Using a Rate Equation Derived from First Principles,” in Application of Surface Science to Advancing Flotation Technology, edited by E.J., Suoninen, A.N. Buckley, and K.S.E., Fossberg, pp. 171-182 (1997).

9. Yoon, R.H., “Surface Forces in Bubble-Particle Interactions,” in Advances in Flotation Technology: Proceedings of Special Symposium Honoring Professor, M.C. Fuerstenau, p. 95-112 (1999).

10. Eriksson, J.C. and Yoon, R.H., “Hydrophobic Attractiion in the Light of Thin Film Thermodynamics,” Colloid Stability -The Role of Surface Forces, Colloid and Interface Science Series, Th. F. Tadros (ed.), Chapter 5, Wiley-VCH, pp.99-131 (2006).

11. Yoon, R.H. and Wang,L., “Hydrophobic Forces in Foam Films,” in Colloid Stability -The Role of Surface Forces, Colloid and Interface Science Series, Th. F. Tadros (ed.), Chapter 7, Wiley-VCH, pp. 161-186 (2006).

12. “The Nature of Hydrophobic Attraction Forces,” Eriksson, J.C, and Yoon, R.H., in: Froth Flotation – A Century of Innovation, by Fuerstenau, M.C., Jameson, G., and Yoon, R.H., Editors, Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO, p. 133-178 (2007).

13. “Hydrophobic Attraction in the Light of Thin Film Thermodynamics,” Eriksson, J.C., and Yoon, R.H., in: Th. F. Tadros (ed.), Colloid Stability: The Role of Surface Forces-Part I, Colloid and Interface Science Series—Volume 1, Wiley-VCH Verlag, p. 99-132 (2007).

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Other Publications

a) Preprints

1. Yoon, R.H., and Salman, T., "Structure and Orientation of Sodium Dodecyl Sulfate Adsorbed on Cu (OH)2," Preprint No. 74-B-36, for the 103rd AIME Annual Meeting, Dallas, Texas (1974).

2. Luttrell, G.H., and Yoon, R.H., "Surface Chemistry of Collectorless Flotation of Chalcopyrite," Preprint No. 83-196, for the 112th AIME Annual Meeting, Atlanta, Georgia (1983).

3. Basilio, C., Pritzker, M.D., and Yoon, R.H., "Thermodynamics, Electrocheistry, and Flotation of the Chalcocite-Potassium Ethyl Xanthate System," Preprint No. 85-86, for the 114th AIME Annual Meeting, New York, New York (1985).

4. Choi, W.Z., Adel, G.T., and Yoon, R.H., "A Combined Size Reduction and Liberation Model of Grinding," Preprint No. 85-3, for the 114th AIME Annual Meeting, New York, New York (1985).

5. Yordan, J.L., and Yoon, R.H., "Induction Time Measurements for the Quartz-Amine Flotation System," Preprint No. 86-105, 115th AIME Annual Meeting, New Orleans, Louisiana (1986).

6. Choi, W.Z., Adel, G.T., and Yoon, R.H., "Estimation of Model Parameters for Liberation and Size Reduction," Preprint No. 87-132, for the 116th AIME Annual Meeting, Denver, Colorado, February, 24-27 (1987).

7. Luttrell, G.H., Adel, G.T., and Yoon, R.H., "Modeling of Column Flotation," Preprint No. 87-130, for the 116th AIME Annual Meeting, Denver, Colorado, February, 24-27 (1987).

8. Mielczarski, J.A., Yordan, J.L., and Yoon, R.H., "FTIR External Reflection Study of Surface Layers on Coal," Preprints of Papers Presented at the 196th ACS National Meeting, Los Angeles, California, September 25-30, 1988, American Chemical Society, New York, vol. 33, no. 4, pp. 729-733 (1988).

9. Mehta, R.K., Adel, G.T., and Yoon, R.H., "Liberation Modeling and Parameter Estimation for Multicomponent Mineral Systems," Preprint No. 89-189, for the 118th Annual AIME Meeting, Las Vegas, Nevada, February 25-March 2, (1989).

10. Nagaraj, D.R., Basilio, C.I., and Yoon, R.H., "The Chemistry and Structure-Activity Relationships for New Sulfide Collectors," Preprint No. 89-306, for the International Symposium, 118th SME/AIME Annual Meeting, Las Vegas, Nevada, February 27-March 2 Processing of Complex Ores, G.S. Dobby and S.R. Rao, eds., Pergamon Press, New York, pp. 157-166 (1989).

11. Mielczarski, J.A., Zachwieja, J.B., and Yoon, R.H., "The Dual Role of Xanthate in the Induction of Hydrophobicity of Chalcocite," Preprint No. 90-174, for the 119th Annual SME Meeting, Salt Lake City, Utah, February, 26-March 1 (1990).

12. Rojas, H.E., Adel, G.T. and Yoon, R.H., "The Effect of Mill Operating Parameters on Mineral Liberation," Preprint No. 90-267, for the 119th Annual SME Meeting, Salt Lake City, Utah, February 26-March 1, 1990;

13. Luttrell, G.H., Yan, S., Adel, G., and Yoon, R.H., "A Computer-Aided Design Package for Column Flotation," Preprint No. 90-173, for the 119th Annual SME Meeting, Salt Lake City, Utah, February 26-March 1 (1990).

14. Mehta, R.K., Dieudonne, V., and Yoon, R.H., "Model Development and Heterogeneous Kinetics of Electrochemical Coal Oxidation," Preprint No. 91-170, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

15. Luttrell, G.H., Tao, D.P., and Yoon, R.H., "The Effect of Froth Behavior on Column Flotation of Fine Coal," Preprint No. 91-152, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

16. Honaker, R.Q., Luttrell, G.H., and Yoon, R.H., "The Application of Hydrophobic Coagulation for Upgrading Ultrafine Coal," Preprint No. 91-149, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

24

17. Luttrell, G.H., Mankosa, M., and Yoon, R.H., "In-Plant Testing of Microbubble Column Flotation," Preprint No. 91-151, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

18. Basilio, C., and Yoon, R.H., "Application of the Acid-Base Theory to Flotation Systems," Preprint No. 91-155, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

19. Basilio, C., Yoon, R.H., Nagaraj, D.R., and Lee, J., "Adsorption Mechanisms of Modified Thiol-Type Collectors," Preprint No. 91-171, for the SME Annual Meeting, Denver, Colorado, February 25-28 (1991).

20. Wang, D., Adel, G.T., and Yoon, R-H., "Image Analysis Characterization of Pyrite in Fine Coal Flotation," Preprint 92-136, for the SME Annual Meeting, Phoenix, Arizona, February 24-27 (1992).

21. Luttrell, G.H., Yan, S., and Yoon, R.H., "A Parametric Study of the Column Flotation of Fine Coal," Preprint 92-163, for the SME Annual Meeting, Phoenix, Arizona, February 24-27 (1992).

22. Basilio, C.I., Kim, D.S., and Yoon, R.H., "Interaction of Thiophosphinate Collectors with Precious Metals," Preprint 92-174, for the SME Annual Meeting, Phoenix, Arizona, February 24-27 (1992).

23. Yoon, R.H., Adel, G.T., Schoenherr, J., Mankosa, M.J., and Zhang, W., "Application of MicrocelTM Technology to Nonmetallic Mineral Flotation," Preprint 93-248, for the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18 (1993).

24. Ravishankar, S.A., Guzonas, D.A., and Yoon R.H., "Direct Force Measurements for Amine Flotation Systems," Preprint 93-249, for the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18 (1993).

25. Celik, M.S., and Yoon, R.H., "Calormetric Studies on Interaction of Ionic Surfactants with Coal," Preprint 93-250, for the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18 (1993).

26. Richardson, P.E., and Yoon, R.H., "Photoelectrochemistry of Freshly-Fractured Mineral Sulfide Electrodes," Preprint, for the SME Annual Meeting and Exhibit in Reno, Nevada, February 15-18 (1993).

27. Honaker, R.Q., Luttrell, G.H., and Yoon, R.H., "Measurements of Aggregate Size Distributions Using a Lasentec Particle Size Analyzer," Preprint for the SME Annual Meeting and Exhibit in Albuquerque, New Mexico, February 14-17 (1994).

28. Mantel, M., Rabinovich, Y.I., Wightman, J.P and Yoon, R.H., “Measurements of Hydrophobic and Adhesion Forces on Stainless Steel Surfaces in Water,” Preprint for the European Conference - Adhesion, Mulhouse, France, September 12-15, pp. 155-160 (1994).

29. Mao, L. and Yoon, R.H., “First-Order Flotation Rate Equation Incorporating Hydrodynamic and Surface Forces,” SME Annual Meeting, February 24-27, 1997, Denver, Colorado, SME, Preprint No. 97-100 (1997).

30. Yoon, R.H., Mendiratta, N., Chen, Z., “The Role of Ferric Ions in the Adsorption of Xanthate on Activated Sphalerite and Chalcopyrite,” SME Preprint No. 98-160, Orlando, Florida, March 9-11 (1998).

31. Yoon, R.H., Basim, B., “Dewatering Fine Coal Using Novel Methods,” SME Preprint No. 98-161, Orlando, Florida, March 9-11 (1998).

32. Yoon, R.H., Pazhianur, R., “AFM Force Measurement for Activated Sphalerite-Xanthate Interactions,” SME Preprint No. 98-162, Orlando, Florida, March 9-11 (1998).

33. Luttrell, G.H. and Yoon, R.H., “The Role of Coal Preparation in Controlling Trace Element Emissions,” Air Quality: Mercury, Trace Elements and Particulate Matter Conference, Tysons Corner, Virginia, December 1-4, Preprint, pp. 6 (1998).

34. Vivek, S., and Yoon, R.H., "Effects of Hydrolyzable Cations on the Hydrophobic and Hydration Forces," SME Annual Meeting & Exhibit, Denver, Colorado, Preprint No. 99-154 (1999).

35. Hangsubcharoen, M., Yan, E.S., Yoon, R.H., and Luttrell, G.H., “Evaluation of the Charging Characteristics of Particles in Triboelectrostatic Separation,” SME Annual Meeting, Salt Lake City, Utah, February 28-March 1, Preprint No. 00-156, 6 pp. (2000).

25

36. Yildrim, I. and Yoon, R.H., “Contact Angles of Powders From Heats Of Immersion,” SME Annual Meeting, February 26-28, Denver Colorado, Preprint No. 01-173 (2001).

37. N.K. Mendiratta1, R.H. Yoon and Steve Wilson, “Effects of Diethylenetriamine and Sulfur Dioxide on Pyrrhotite Depression,” SME Annual Meeting, February 26-28, Denver Colorado, Preprint No. 01-172 (2001).

38. Kortmeyer, J., Yordan, J.L., Yildirim, I., Yoon, R.H., “Studies of the Interactions between Talc and Stickies during Paper Recycling,” the 6th Research Forum on Recycling, October 1-4, Magog, Quebec, Canada, Paper 31, pp. 5 (2001).

39. Luttrell, G.H., Kohmuench, J.N., and Yoon, R.H., “HAPPs Reduction by Coal Preparation”, 11th International Conference on Coal Science, San Francisco, California, September 30-October 5, 4 pp; Preprint 397 (2001).

40. Tao, D., Richardson, P.E., and Yoon, R.H., “Electrochemical Studies of Freshly Fractured Cosal and Mineral Pyrite,” 11th International Conference on Coal Science, San Francisco, California, September 30-October 5, 4 pp.; Preprint 412 (2001).

41. Yildirim, I. and Yoon, R.H., “Surface Free Energy Characterization of Fine Particles,” SME Annual Meeting, February 25-27, Phoenix, Arizona, Preprint No. 02-153 (2002).

42. Yordan, J. Kortmeyer, I., Yildirim and Yoon, R.H., “Studies of the Interactions between Talc and Stickies During Paper Recycling,” SME Annual Meeting, February 25-27, Phoenix, Arizona, Preprint No. 02-152 J.L. (2002).

43. Vivek, S. and Yoon, R.H., “A Model for the Adsorption of Hydrolysable Cations on Silica,” SME Annual Meeting and Exhibit, Cincinnati, OH, Feb 24-26 (2003).

44. Asmatulu, R., Yildirim, I., Eryadin, Mert K., Luttrell, G.H., Rimmer, H., and Yoon, R.H., “Pilot-scale Testing of Novel Dewatering Aids,” by SME Annual Meeting and Exhibit, Cincinnati, OH, Feb 24-26 (2003).

45. Phazinaur, R. and Yoon, R.H., “A Model for the Origin of Hydrophobic Force,” SME Annual Meeting and Exhibit, Cincinnati, OH, Feb 24-26 (2003).

46. Yildirim, I., Zhang, J., Yordan, Y. and Yoon, R.H., “Effect of Surface Treatment on the Acid-Base Properties of Fillers and Pigments,” by, Symposium on Functional Fillers and Nanoscale Minerals, SME Annual Meeting and Exhibit, Cincinnati, OH, Feb 24-26, (2003).

47. Yoon, R.H., Asmatulu, R., and Eraydin, M.K., “Pilot Scale Testing of Novel Fine Particle Dewatering Aids,” SME Annual Meeting & Exhibit, February 24-26, Cincinnati, Ohio, Preprint No. 03-127 (2003).

48. Yoon, R.H. and Pazhianur, R., “A Model for the Origin of Hydrophobic Force,” SME Annual Meeting & Exhibit, February 24-26, Cincinnati, Ohio, Preprint No. 03-126 (2003).

49. Yildirim, I., Zhang, J., and Yoon, R.H., “Effect of Surface Treatment on the Acid Base Properties of Fillers and Pigments,” in Functional Fillers and Nanoscale Minerals, (edited by Jon J. Keller, Marc A. Herpfer, and Brij M. Moudgil), SME Annual Meeting & Exhibit, Cincinnati, Ohio, p. 217-225, February 24-26 (2003).

50. Vivek, S. and Yoon, R.H., “Adsorption of Hydrolizable Cations on Hydrophobized Silica,” SME Annual Meeting & Exhibit, Cincinnati, Ohio, Preprint No. 03-017 , February 24-26 (2003).

51. Luttrell, G.H., Burchett, R.T., and Yoon, R.H., “Economic Benefits of Improved Moisture Reduction in Coal Preparation Plants”, 20th Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, Preprint 16-1, 9 pp. September 15-19 (2003).

52. Asmatulu, R. and Yoon, R.H., “Hyperbaric Centrifugal Filtration,” SME Annual Meeting, February 23-25, Denver, Colorado, Preprint 04-126 (2004).

53. Mao. L., Wang, L., and Yoon, R.H., “Hydrophobicity of Oil Droplets in Water,” SME Annual Meeting, February 23-25, Denver, Colorado, Preprint 04-127 (2004).

54. Brady, M.R., Vlachos, P., Telionis, D.P., Sherrell, I, and Yoon, R.H., “Turbulent Bubble-particle Interactions Measured by Particle Image Velocimetry (PIV),” SME Annual Meeting, Denver, CO., Preprint 04-193. February 23-25 (2004).

26

55. Luttrell, G.H., Honaker, R.Q., and Yoon, R.H., “Optimization of the Coal Fuel Supply Chain: A Coal Preparation Perspective”, 29th International Technical Conference on Coal Utilization and Fuel Systems, Sheraton Sand Key, Clearwater, Florida, Preprint 140, 9 pp. April 18-22 (2004).

56. Wang, L., and Yoon, R.H., "Effects of Surface Forces and Film Elasticity on Froth Stability", SME Annual Meeting, St. Louis, Missouri, Preprint 06-007 March 26-29 (2006).

57. Yoon, R.H., Eraydin, M., Keles, S. and Luttrell, G.H., “Advanced Dewatering Methods for Energy Savings in the Mineral Processing Industry”, SME Annual Meeting and Exhibit, Denver, Colorado, Preprint 07-124, 5 pp. February 25-28 (2007).

58. Do, H., Zhang, J., Yoon, R.H., and Yu, M.K., “Improving Coarse Particle Flotation for Energy Savings”, SME Annual Meeting and Exhibit, Denver, Colorado, Preprint 07-120, 4 pp. February 25-28 (2007).

59. Do, H., Sherrell, I. and Yoon, R.H., “A Model for Froth-Phase Recovery,” SME Annnual Meeting & Exhibit, Salt Lake City, Utah, Preprint N. 08-041 February 24-27 (2008).

60. Yoon, R.H. and Wang, L., “Effect of pH and Electrolyte on the Stability of Surfactant-free Foam Films”, in: D. R. Nagaraj et al. (eds.), Innovations in Research, Operation and Education for Sustainable Mineral Development, Society for Mining, Metallurgy, and Exploration, Inc., Colorado, U.S.A., 2009; SME Annual Meeting, Denver, Colorado, U.S.A., preprint 09-130 February 22-25 (2009).

61. Vivek, S., Yoon, R.H., and Fuerstenau, M.C., “A Model for the Adsorption of Hydrolysable Cations on Silica,” in: D. R. Nagaraj et al. (eds.), Innovations in Research, Operation and Education for Sustainable Mineral Development, Society for Mining, Metallurgy, and Exploration, Inc., Colorado, U.S.A., 2009; SME Annual Meeting, Denver, Colorado, U.S.A., Preprint 09-131 February 22-25 (2009).

62. Honaker, R.Q., Boaten, R., Luttrell, G.H., Shin, D. and Yoon, R.H., “Particle Density Effects in Classifying Cyclone Circuits,” Preprint No. 10-147, 4 pp. SME Annual Meeting & Exhibit, Phoenix, Arizona, February 28 – March 1 (2010).

63. Addison, C., Jones, R., Addison, F., Stanley, F., Luttrell, G., Bratton, R. and Yoon, R.H., “Development of a New Control Strategy for Dense Medium Cyclone Circuits,” Preprint No. 10-148, 4 pp. SME Annual Meeting & Exhibit, Phoenix, Arizona, February 28-March 3 (2010).

64. Li, J. and Yoon, R.-H., ““Effect of Electrochemical Potentials on the Hydrophobic Forces between Gold Surfaces,” SME Annual Meeting, Seattle, Washington, February 19 - 22, 2012.

65. Asmatulu, R. and Yoon, R.-H., “Dewatering of Mineral Fines,” SME Annual Meeting, Seattle, Washington, February 19 - 22, 2012.

b) Annual Reviews

1. Yoon, R.H., “Dewatering and Tailings Disposal,” Mining Engineering, vol. 36, no. 5, p. 478. (1984).

2. Yoon, R.H., “Flotation,” Mining Engineering, vol. 37, no. 5, pp. 435-438 (1985). 3. Yoon, R.H., “Flotation,” Mining Engineering, vol. 39, no. 5, pp. 357-358 (1987). c) Journal Editorships

1. Yoon, R.H., and Fuerstenau, D.W., editors, "Adsorption on Mineral Solids (Surface Chemistry of

Flotation)," Colloids and Surfaces, vol. 8, no. 2 (Selected papers from the 56th Colloid and Surface Science Symposium, Blacksburg, Virginia, June, l982), (1983).

2. Yoon, R.H., and Fuerstenau, D.W., editors, "Surface Chemistry of Flotation," International Journal of Mineral Processing, vol. 12, no. 1-3, (Selected papers from the 56th Colloid and Surface Science Symposium, Blacksburg, Virginia, June, 1982), (1984).

27

Patents

1. "Purification of Kaolin Clay by Froth Flotation Using Hydroxamate Collectors," U.S. Patent No. 4,629,556, December 16, 1986.

2. "Ferric Ion Treatment for Removal of Ash-Forming Mineral Matter from Coal," U.S. Patent No. 4,655,896, April 7, 1987.

3. "A Process and Apparatus for Separating Fine Particles by Microbubble Flotation Together with a Process and Apparatus for Generation of Microbubbles," U.S. Patent No. 4,981,582, January 1, 1991.

4. "Method for Separating Fine Particles by Selective Hydrophobic Coagulation," U.S. Patent No. 5,161,694, November 10, 1992.

5. "Apparatus and Process for the Separation of Hydrophobic and Hydrophilic Particles Using Microbubble Column Flotation Together with a Process and Apparatus for Generation of Microbubbles," U.S. Patent No. 5,167,798, December 1, 1992.

6. "A Process and Apparatus for Separating Fine Particles by Microbubble Flotation Together with a Process and Apparatus for Generation of Microbubbles,” Australia Patent No. 635,503, March 25, 1993.

7. "A Process and Apparatus for Separating Fine Particles by Microbubble Flotation Together with a Process and Apparatus for Generation of Microbubbles,” Australia Patent No. 635,630, July 19, 1993.

8. "Process and Apparatus for Separating Fine Particles by Microbubble Flotation Together with a Process and Apparatus for Generation of Microbubbles,” Canadian Serial No. 589,293, December 6, 1994.

9. "Method for Dewatering Fine Coal," U.S. Patent No. 5,458,786, October 17, 1995. 10. "Video Instrumentation for the Analysis of Mineral Content in Ores and Coal," U.S. Patent No.

5,396,260, March 7, 1995. 11. “Apparatus for the Separation of Hydrophobic Particles Using Microbubble Column Flotation

Together with a Process and Apparatus for Generation of Microbubbles,” U.S. Patent No. 5,397,001, March 14, 1995.

12. "Method for Dewatering Fine Coal," U.S. Patent No. 5,587,085, December 24, 1996. 13. "Apparatus for Improved Ash and Sulfur Rejections," U.S. Patent No. 5,522,510, June 4, 1996. 14. “Chemical-Mechanical Dewatering Process,” U.S. Patent No. 5,670,056, September 23, 1997. 15. “Chemical-Mechanical Dewatering Process,” South African Patent No. 96/8390, September 23,

1997. 16. “Chemical-Mechanical Dewatering Process,” Australian Patent No. 696,807, September 17,

1998. 17. “Apparatus and Process for the Separation of Hydrophobic and Hydrophilic Particles Uisng

Microbubble Column Flotation Together with Process and Apparatus for Generation of Microbubbles,” U.S. Patent No. 5,814,210, September 29, 1998.

18. “Methods of Increasing Flotation Rate,” Chilean Patent Application No. 0957-2001, May 2000; approved.

19. “An Electrostatic Method of Separating Particulate Materials, U.S. Papent No. 6,320,148, November 20, 2001.

20. “Methods of Improving Centrifugal Filtration,” Canadian Patent Application No. 2,481,962, April 12, 2002.

21. “Methods of Improving Centrifugal Filtration,” European Patent Application No. 02733969.6, April 12, 2002.

22. “Methods of Improving Centrifugal Filtration,” Patent Corporation Treaty, PCT/US02/11318, April 12, 2002.

23. “Methods of Improving Centrifugal Filtration,” U.S. Patent No. 6,440,316, August 27, 2002. 24. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” U.S. Patent

No. 6,375,853, April 23, 2002.

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25. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” Canadian Patent Application No. 2,467,953, February 20, 2002.

26. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” Frensh Patent Application No. 02723176, February 20, 2002.

27. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” Protugish Patent Application No. 0273176.0, February 20, 2002.

28. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” Spanish Patent Application No. 02723176.0, February 20, 2002.

29. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” United Kingdom Patent Application No. 02723176.0, February 20, 2002.

30. “Method of Using Natural Products as Dewatering Aids for Fine Particles,” International Publication No. 02/26340, April 4, 2002.

31. “Methods of Using Natural Products as Dewatering Aids for Fine Particles,” U.S. Patent No. 6,526,675, March 4, 2003.

32. “Method of Increasing Flotation Rate,” U.S. Patent 6,799,682, October 5, 2004. 33. “Methods of Enhancing Fine Particle Dewatering,” U.S. Patent 6,855,260, February 15, 2005. 34. “Methods of Increasing Flotation Rate,” U.S. Patent No. 6,871,743, March 29, 2005. 35. “Methods of Enhancing Fine Particle Recovery,” U.S., Patent No., 6,855,260, Feb. 25, 2005. 36. “Impproving the Separation of Diamond form Gangue Minerals,” U.S. Provisional Application

No. 60/639,952, February 4, 2005. 37. “Impproving the Separation of Diamond form Gangue Minerals,” Patent Treaty Corporation,

Publication No., 2006/084170952, August 10, 2006. 38. “Methods of Improving Centrifugal Filtration,” South African Patent No. 2004/8901, February

22, 2007. 39. “Methods of Improving Centrifugal Filtration,” Chinese Patent No. ZL02829107.7, March 28,

2007. 40. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” Australian

Patent No. 2002,253,970, September 6, 2007. 41. “Methods of Protecting Metals from Crorrosion Using Organosulfur Compaounds,” Chinese

Patent No. I290964, December 11, 2007. 42. “Methods of Improving Centrifugal Filtration,” Russian Patent No. 2335344, October 10, 2008. 43. “Methods of Improving Centrifugal Filtration,” Australian Patent No. AU2002305165 B2, Nov.

13, 2008. 44. “Methods of Enhancing Fine Particle Recovery,” U.S. Patent No. 2008/0053914, published,

March 6, 2008. 45. “Method of Increasing Flotation Rate,” Austalian Patent No. 2002246613, Feb. 29, 2008. 46. “Methods of Using Modified Natural Products as Dewatering Aids for Fine Particles,” European

Patent No. EP1,450,928B1, October 21, 2009. 47. “Methods of Using Natural Products as Dewatering Aids for Fine Particles,” European Patent

EP1,406,711B1, Nov. 18, 2009. 48. “Methods of Enhancing Fine Particle Dewatering,” Eoropean Patent No. EP1,333,905B1, Nov.

18, 2009. 49. “Cleaning and Dewatering Fine Coal,” U.S. Patent Application No. 61/300,270, February 1,

2010. 50. “Improving the Separation of Diamond from Gangue Minerals,” Russian Federation Patent No.

2412901, February 27, 2011. 51. “Improving the Separation of Diamond from Gangue Minerals,” South South Africa Payent No.

2007/07569, April 28, 2011. 52. “Methods of Increasing Flotation Rate,” Canadian Patent No. 2,48,233, August 2, 2011 53. “Improving the Separation of Diamond from Gangue Minerals,” U.S. 8,007,754, August 30, 2011. 54. “Method of Increasing Flotation Rate,” Australian Patent No. 2008200740, December 15, 2011.

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Plenary Papers/Keynote Addresses/Award Lectures

1. "Applying FTIR Spectroscopy," Plenary Lecture, Royal Australian Chemical Institute Symposium on New ASpectroelectrochemical Investigations of the Interaction of Minerals with Flotation Collectors Approaches to the Study of Mineral/Solution Interfaces, Brisbane, Australia, August 28-September 1, 1989.

2. "Hydronamic and Surface Forces in Bubble-Particle Interactions," Plenary Lecture, XVII International Mineral Processing Congress, Dresden, Germany in Proceedings, pp. 17-31; Aufbereitungs-Technik, vol.32 no. 9, pp. 474-485 September 23, 1991.

3. "Advances in the Science and Technology of Flotation," Plenary Lecture, XV Brazilian Meeting on Mineral Processing and Hydrometallurgy/III Meeting of the Southern Hemisphere on Mineral Technology, Sao Lournco, Minas Gerais, Brazil, Proceedings, pp. 3-18 September 13-16, 1992.

4. "Fine Particle Flotation," Plenary Lecture, The First International Conference on Modern Process Mineralogy and Mineral Processing, Beijing, China, Proceedings, pp. 808-813 September 20-25, 1992.

5. "Improving Fine Particle Flotation using Microbubbles," Keynote Paper, 65th Annual Meeting of the Minnesota Section of SME and the 53rd Annual Mining Symposium at the University of Minnesota, Duluth, Minnesota, January 14-16, 1992.

6. "Application of Mineral Processing Techniques in Recycling," Plenary Lecture, the 2nd International Symposium on East Asian Resources Technology, Seoul, Korea, Proceedings, pp.1-11 October 13-17, 1993.

7. “Recycling in the United States," Plenary Lecture, Fall Meeting, Korean Mining Institute, Kang Won University, Choon Chun, Korea, October 21, 1993.

8. “Hydrophobic Forces in the Free Films of Water in the Presence of Dodecylammonium Hydrochloride,” Plenary lecture for the EUCHEM Conference on Surface Forces in Science and Technology, Stockholm, Sweden, June 15-18, 1995.

9. “Meeting the Clean Air Act Requirements Using Advanced Coal Cleaning Technologies,” Keynote Paper, Virginia Coal Council Annual Meeting, Roanoke, Virginia, October 2-3, 1995.

10. “Column Flotation and Bubble Generation,” Plenary Lecture, Conference in Mineral Processing, Luleå, Sweden, Proceedings, pp. 11-16, February 13-14, 1996.

11. “Methods of Separating Used Plastics for Recycling,” Plenary Lecture, Korea-America Joint Workshop on Resources Recycling Technology, Seoul, Korea, 1996, Proceedings, pp. 113-131, November 5-6, 1996.

12. “Hydration and Hydrophobic Force Measurements Using Atomic Force Microscope,” Keynote Paper, NEPTIS-5 Workshop, Kyoto, Japan, Proceedings, pp. 77-83, December 8-10, 1996.

13. “Direct Surface Force Measurements between Hydropjobic Glass Sphere and Covellite,” Keynote Paper, 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria, July, 6-12, 1997.

14. “Role of Advanced Coal Cleaning Technologies for CO2 Emission Control,” Keynote Paper, APEC Fifth Technical Seminar on Clean Fossil Energy, Reno, Nevada, Oct. 27-30, 1997.

15. “Economic and Environmental Benefits of Improving Fine Coal Recovery and Dewatering,” Keynote Paper, Adding Value to Coal, Rotterdam, Netherlands, June 25-26, 1997.

16. “Commercialization of the Microcel Column flotation Technolgy,” Plenary Lecture, Pittsburgh Coal Conference and Workshop, Taiyuan, Shanxi, Peoples’s Republic of China, September 23-27, 1997.

17. “Advanced Coal Cleaning and Dewatering Technolgy,” Plenary Lecture, International Symposium on Clean Coal Technology-Coal Processing Utilization and Conversion, Xiamen, Fujian, China, Noverber 18-20, 1997.

18. “Hydrophobic Forces and Advances in Flotation,” Plenary Lecture, Programa de Engenharia Metalurgica e de Materiais, University of Rio de Janeiro, Brazil, July 16, 1998.

19. “Recent Advances in Flotation and Challenges Ahead,” Plenary Lecture, Engineering Foundation Cenference: Beneficiation of Phasphate III, December 3, 2001.

20. “Technical and Economic Benefits of Using Advanced Coal Cleaning Technologies,” Keynote Paper, U.S.-China Clean Energy Technology Forum, August 28-September 1, 2001, Beijing, China.

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21. “Hydrophobic Interactions,” Keynote Paper, Conference on Flotation and Flocculation: from Fundamentals to Applications,” Hawaii, July 28-August 4, 2002.

22. “Recent Development in Plastics Recycling in the U.S.,” Plenary Lecture, Seoul International Symposium on Establishment of Resources Recycling Society: Waste Recycling, Today and Tomorrow, Seoul, Korea, October 1-2, 2002.

23. “Hydrophobic Interactions in Flotation,” Antoine M. Gaudin Award Lecture, SME Annual Meeting & Exhibit, Cincinnati, Ohio, February 24-26, 2003.

24. “Hydrophobicity and Hydrophobic Force,” Plenary Lecture, European Chemistry at Interfaces Conference, Vladimir, Russia, May 17, 2003.

25. “Center for Advanced Separation Technologies – An Update for the Latest Development from CAST,” keynote paper, Coal and Aggregate Processing Exhibition and Conference, Lexington, Kentucky, May 3, 2005.

26. “Hydrophobic Forces in Flotation,” keynote paper, Centenary of Flotation Symposium, Brisbane, Australia, June 5-9, 2005.

27. “Hydrophobic Interactions in Flotation,” Honorary Professorship Lecture at Central South University of China, Changsha, Hunan, China, March 15, 2005.

28. “Flotation Model Development from First Principles,” Plenary Lecture, XXI Encontro Nacional Tratamento de Minerios e Metalurgia Extrativa, Natal, Brazil, Nov. 20-24, 2005.

29. “Coal Beneficiation to Increase Efficiency and Lower Emissions,” Turkish-American Clean Energy Conference, Ritz-Carton Hotel, Istanbul, Turkey, Keynore Panel Speaker, January 28-30, 2007.

30. “Coal Preparation Research at the Center for Advanced Separation Technologies,” Keynote Paper at the Australian Coal Preparation Sciciety Meeting, New Southwales Chapter, Singleton, Australia, Agust 15, 2007.

31. “From Basic Research to Technology Development,” Richard Award Lecture, 2007 SME Annual Meeting & Exhibit, Denver, Colorado, February 25-28, 2007.

32. “Developing a Predictive Flotation Model: for Coarse and Fine Particle Flotation,” Plenary Lecture, International Coal Beneficiation and Fines Technology (ICBFT), Jamshedpur, India, December 10-11, 2007.

33. “Fine Coal Beneficiation and Recovery,” Keynote Paper, Workshop on Coal Bebeficiation and Utilization of Rejects - Initiatives, Policies and Practices,” APP-Coal Mining Task Force, Ranchi, India, August 21-22, 2007.

34. “Hydrophobic Interactions in Resource recovery,” Plenary Lecture, Chemeca 08, Newcastle, Australia, Sep. 28-Oct. 1, 2008.

35. “Fine Coal Dewtering: New Developments a Virginia Tech”, Keynote Paper, 12th Conference of the Australian Coal Preparation Socoety, Sydney Australia, October 19-23, 2008.

36. “Improving Coarse Particle Flotation,” keynote paper, XXIV International Mineral Processing Congress, Beijing, China, September 24-28,2008.

37. “Hydrophobic Interactions in the Processing of Energy Minerals,” 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, , New York, NY; Keynote Paper, June 14-19, 2009.

38. “Surface Forces Measured between Gold Surfaces in Xanthate Solutions,” COM 2009: Conference of Metallurgists in Conjunction with Nickel and Cobalt 2009, Ontario, Canada; Keynote Paper, August 23-26, 2009.

39. “Bubbles and Particles,” Society of Mining Engineers Annual Meeting and Exhibit, February 27-March 2, 2011, Denver, CO; Plenary Lecture.

40. “Stability of the Wetting Films Formed on Hydrophilic and Hydrophobic Gold Surfaces,” 241st ACS National Meeting & Exposition, March 27-31, 2011, Anaheim, California; Invited Paper.

Congressional and Legislative Testimonies

1. "Advanced Coal Cleaning Technologies," Testimony at the Committee on Science, Space, and

Technology, U.S. House of Representatives, April 30, 1990.

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2. “Developing Advanced Separation Technologies for Producing Clean Coal,” Testimony before Subcommitee on Energy and Commerce, U.S. House of Representatives, Washington, DC, March 14, 2001.

3. “Advanced Mining and Separation Technologies to Supply Low-Cost Fuels for the U.S. Power Industry,” testimony presented before the Subcommittee on Energy and Air Quality, Committee on Energy and Commerce, U.S. House of Representatives, Washington, DC., June 24, 2003.

4. “Advanced Separation Technologies Developed at CAST,” Testimony before the Subcommittee of the Joint Standing Committee, West Virginia Legislature, June 8, 2010.

Presentation at Professional Meetings 1. Yoon, R.H. and Salman, T. "Zero Point of Charge of Cupric Hydroxide and Surface Area

Determination by Dye Adsorption," 9th Annual Conference of Metallurgists, Hamilton, Ontario, August 1970.

2. Yoon, R.H. and Salman, T. "Flotation Characteristics of Cu(OH)2 Precipitates," 10th CIM Conference of Metallurgists, Montreal, Canada, August 1971.

3. Yoon, R.H. and Salman, T. "Structure and Orientation of Sodium Dodecyl Sulfate Adsorbed on Cu(OH)2," 103rd AIME Annual Meeting, Dallas, Texas, February 1974.

4. LeNormand, J., Salman, T. and Yoon, R.H. "Hydroxamate Flotation of Malachite," 14th CIM Conference of Metallurgists, Edmonton, Alberta, August 1975.

5. Yoon, R.H. and Salman, T. "Chemisorption of Sodium Lauryl Sulfate on γ-Al2O3," International Conference on Colloids and Surfaces, Puerto Rico, June 1976.

6. Yoon, R.H. and Salman, T. "Heats of Adsorption of Anionic Surfactant on Cu(OH)2 and Co(OH)2," Symposium on Polymers at Interfaces: Focus on Adhesion, Montreal, Canada, October 1976.

7. Yoon, R.H., Salman, T. and Donnay, G. "Predicting Points of Zero Charge of Oxides and Hydroxides," 52nd Colloid and Surface Science Symposium, Knoxville, Tennessee, June 1978.

8. Lozyk, G.M., Yoon, R.H. and Salman, T. "Surface Chemistry of Sphalerite Flotation," 17th CIM Conference of Metallurgists, Montreal, Canada, August 1978.

9. Yoon, R.H. and Stemerowicz, A.C. "Collectorless Flotation of Chalcopyrite and Sphalerite," 11th Annual Meeting of the Canadian Mineral Processors, Ottawa, Ontario, January 1979.

10. Pritzker, M.D., Yoon, R.H. and Dwight, D.W. "An ESCA Study of the Chalcopyrite Concentrates Produced by Collectorless Flotation," 54th Colloid and Surface Science Symposium, Bethlehem, Pennsylvania, June 1980.

11. Yoon, R.H. and Salman, T. "Selective Flotation of Cu(OH)2 and Co(OH)2 Precipitates Using Sodium Dodecyl Sulfate and Sodium Oleate," 54th Colloid and Surface Science Symposium, Bethlehem, Pennsylvania, June 1980.

12. Yoon, R.H. and Miller, K.J. "A Preliminary Investigation on the Application of Microgas Dispersion for Fine Coal Flotation," 12th Annual Spring Meeting of the Fine Particle Society, Rosemont, Illinois, May 1981.

13. Sabey, J.B. and Yoon, R.H. "Surface Chemistry of Salt Flotation of Coal," 55th Colloid and Surface Science Symposium, Cleveland, Ohio, June 1981.

14. Groppo, J.G., Jr. and Yoon, R.H. "Selective Flotation of Sulfide Ores Using Alkyl Pyridinium Collectors," Engineering Foundation Conference on Interfacial Phenomena in Mineral Processing, Rindge, New Hampshire, August 1981.

15. Sebba, F. and Yoon, R.H. "The Use of Micron-Sized Bubbles in Mineral Processing," Engineering Foundation Conference on Interfacial Phenomena in Mineral Processing, Rindge, New Hampshire, August 1981.

16. Craig, J.R., Yoon, R.H. and Haralick, R.M. "Quantitative Characterization of Ore Textures and Beneficiation Products," Annual Meeting of the Geological Society of America, Cincinnati, Ohio, November 1981.

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17. Craig, J.R., Yoon, R.H., Haralick, R.M, Pong, T.C. and Choi, W.Z. "Application of the General Image Processing System (GIPSY) to Mineral Beneficiation Studies," Process Mineralogy Symposium, 111th AIME Annual Meeting, Dallas, Texas, February 1982.

18. Luttrell, G.H. and Yoon, R.H. "Collectorless Flotation of Sulfide Ores," 111th AIME Annual Meeting, Dallas, Texas, February 1982.

19. Yoon, R.H. "Flotation of Coal Using Micro-Bubbles and Inorganic Salts," American Mining Congress Coal Convention, St. Louis, Missouri, May 1982.

20. Halsey, G.S., Yoon, R.H. and Sebba, F. "Cleaning of Fine Coal by Flotation Using Colloidal Gas Aphrons," 13th Annual Spring Meeting of the Fine Particle Society, Rosemont, Illinois, May 1982.

21. Pritzker, M.D. and Yoon, R.H. "Computer Calculations on the Thermodynamics of the Galena-Oxygen-Ethyl Xanthate Flotation System," 56th Colloid and Surface Science Symposium, Blacksburg, Virginia, June 1982.

22. Yoon, R.H., Groppo, J.G., Jr. and Zachwieja, J.B. "Surface Chemistry of Flotation of Chalcopyrite Using Alkylpyridinium Collectors," 56th Colloid and Surface Science Symposium, Blacksburg, Virginia, June 1982.

23. Craig, J.R., Haralick, R.M., Yoon, R.H., Pong, T.C. and Choi, W.Z. "Ore Microscopic Studies Using the General Image Processing System (GIPSY)," International Mineralogical Society Meeting, Varna, Bulgaria, September 1982.

24. Craig, J.R., Yoon, R.H., Haralick, R.M., Choi, W.Z. and Pong, T.C. "Mineralogical Variations During Comminution of Complex Sulfide Ores," Process Mineralogy Session, 112th AIME Annual Meeting, Atlanta, Georgia, March 1983.

25. Luttrell, G.H. and Yoon, R.H. "Surface Chemistry of Collectorless Flotation of Chalcopyrite," 112th AIME Annual Meeting, Atlanta, Georgia, March 1983.

26. Trigg, R.D. and Yoon, R.H. "The Cleaning of Ultra-Fine Coal Using Micro-Bubbles," 57th Colloid and Surface Science Symposium, Toronto, Ontario, June 1983.

27. Trigg, R.D. and Yoon, R.H. "Flotation of Ultra-Fine Coal Particles Using Micro-Bubbles," Fine Particle Society, Pacific Region Meeting, Honolulu, Hawaii, August 1983.

28. Yoon, R.H. "The Beneficiation of Kaolin Clay, Pegmatites and Kyanite Ores in the United States," Plenary Lecture, Symposium on the Utilization of Non-Metallic Minerals, Seoul, Korea, October 1983.

29. Yoon, R.H. "Micro-Bubble Flotation of Coal," Engineering Foundation Conference on Advanced Coal Cleaning: Impact of Coal Quality on Downstream Processes, Santa Barbara, California, January 1984.

30. Pritzker, M.D. and Yoon, R.H., "Thermodynamic Calculations and Electrochemical Studies on the Galena-Ethyl Xanthate System," Symposium on Electrochemistry in Mineral and Metal Processing, 165th Meeting of The Electrochemical Society, Cincinnati, Ohio, May 1984.

31. Brown, M.D., Adel, G.T. and Yoon, R.H., "Attrition Microgrinding of Coal: A Kinetic Study," 15th Annual Meeting of the Fine Particle Society, Orlando, Florida, July 1984.

32. Yoon, R.H., Trigg, R.D., Luttrell, G.H. and Adel, G.T., "Microbubble Flotation of Coal: A Hydrody-namic Consideration," 15th Annual Meeting of the Fine Particle Society, Orlando, Florida, July 1984.

33. Pritzker, M.D., Yoon, R.H., Basilio, C. and Choi, W.Z. "Solution and Flotation Chemistry of Sulfide Minerals," 23rd Annual Conference of Metallurgists, Quebec, Quebec, August 1984.Yoon, R.-H., Luttrell, G. H., Adel, G T. and Trigg, R.D. "Cleaning of Ultrafine Coal by Microbubble Flotation," First Annual Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 1984.

34. Choi, W.Z., Adel, G.T. and Yoon, R.H. "A Combined Size Reduction and Liberation Model of Grinding," 14th AIME Annual Meeting, New York, New York, February 1985.

35. Basilio, C., Pritzker, M.D. and Yoon, R.H. "Thermodynamics, Electrochemistry and Flotation of the Chalcocite-Potassium Ethyl Xanthate System," 114th AIME Annual Meeting, New York, New York, February 1985.

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36. Choi, W.Z., Yoon, R.H., Craig, J.R. and Haralick, R.M., "Application of Population Balance Model to Comminution of Complex Sulfide Ores," 16th Annual Meeting of the Fine Particle Society, Miami Beach, Florida, April 1985.

37. Choi, W.Z., Adel, G.T. and Yoon, R.-H., "Liberation Analysis Using a Simple Image Processing System," 16th Annual Meeting of the Fine Particle Society, Miami Beach, Florida, April 1985.

38. Luttrell, G.H., Adel, G.T. and Yoon, R.H., "Effect of Bubble Size on Fine Coal Flotation," 6th Annual Meeting of the Fine Particle Society, Miami Beach, Florida, April 1985.

39. Luttrell, G.H., Keyser, P.M., Adel, G.T. and Yoon, R.H., "Improvements in Recovery and Selectivity with the Microbubble Flotation Process," Second Annual Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 1985.

40. Choi, W.Z., Adel, G.T. and Yoon, R.H., "Liberation Modeling Using Automated Image Analysis," Engineering Foundation Conference on Advances in Comminution, Kona, Hawaii, December 1985.

41. Yoon, R.H. and Shi, J., "Processing of Kaolin Clay," Arbiter Symposium, 115th AIME Annual Meeting, New Orleans, Louisiana, March 1986.

42. Choi, W.Z., Adel, G.T. and Yoon, R.H., "A Size Reduction/Liberation Model of Grinding Including Multiple Classes of Composite Particles," 115th AIME Annual Meeting, New Orleans, Louisiana, March 1986.

43. Yordan, J.L. and Yoon, R.H., "Induction Time Measurements for the Quartz-Amine Flotation System," 15th AIME Annual Meeting, New Orleans, Louisiana, March 1986.

44. McCreary, T.W., Yoon, R.H. and Long, G., "The Effect of Organic Gases on Molecular Formation Reactions in the DCP," Pittsburgh Conference and Exposition on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pennsylvania, March 1986.

45. Celik, M.S. and Yoon, R.H., "Adsorption of Nonionic Surfactants on Coal," Session on Surfactants in Minerals and Material Systems, American Chemical Society National Meeting, New York, New York, April 1986.

46. Yoon, R.H., Xu, Z., Chen, J. and Chen, W., "Selective Flocculation of Titanomagnetite, Ilmenite and Feldspar Using Sulphonated Polyacrylamide," Symposium on Flocculation in Biotechnology and Separation Systems, San Francisco, California, July 1986.

47. Choi, W.Z., Adel, G.T. and Yoon, R.H., "Modeling of Size Reduction and Liberation," 25th Annual CIM Conference of Metallurgists, Toronto, Ontario, August 1986.

48. Luttrell, G. H., Adel, G. T. and Yoon, R.H., "A Population Balance Model of Column Flotation Developed from First Principles," 25th Annual CIM Conference of Metallurgists, Toronto, Ontario, August 1986.

49. Luttrell, G. H., Adel, G. T. and Yoon, R.H., Modeling of Column Flotation," Sixth International Workshop on Coal-Liquid and Alternate Fuels Technology, Halifax, Nova Scotia, October 1986.

50. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Development of the Microbubble Flotation Process," Engineering Foundation Conference on Fine Coal Cleaning and Control of Fine Coal Cleaning Processes, Santa Barbara, California, January 25-30, 1987.

51. Yoon, R.-H., Keyser, P. M., Luttrell, G. H. and Adel, G. T., "Advanced Coal Cleaning Using Microbubble Flotation," 116th AIME Annual Meeting, Denver, Colorado, February 24-27, 1987.

52. Luttrell, G. H. and Yoon, R.-H., "The Effects of Bubble and Particle Size in Flotation," 116th AIME Annual Meeting, Denver, Colorado, February 24-27, 1987.

53. Luttrell, G. H., Adel, G. T. and Yoon, R.-H., "Modeling of Column Flotation," 116th AIME Annual Meeting, Denver, Colorado, February 24-27, 1987.

54. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "Estimation of Model Parameters for Liberation and Size Reduction," 116th AIME Annual Meeting, Denver, Colorado, February 24-27, 1987.

55. Adel, G. T. and Yoon, R.-H., "Liberation Modeling of Multicomponent Systems," Project Review Meeting of the Generic Center on Comminution, Golden, Colorado, February 27, 1987.

56. McCreary, T. W., Yoon, R.-H. and Long, G., "The Effect of Organic Gases on Emmission Signals from Slurries in the DCP," Pittsburgh Conference and Exposition on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pennsylvania, March, 1987.

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57. Mankosa, M. J., Adel, G. T. and Yoon, R.-H., "The Effect of Operating Parameters on Stirred Ball Mill Grinding of Coal," Symposium on Novel Techniques for Particle Production, 18th Annual Fine Particle Society Meeting, Boston, Massachusetts, August 3-7, 1987.

58. Yordan, J. and Yoon, R.-H., "Induction Time Measurements for a Coal Flotation System," Symposium on Interfacial Phenomena in Biotechnology and Materials Separations, 18th Annual Fine Particle Society Meeting, Boston, Massachusetts, August 3-7, 1987.

59. Yoon, R.-H., Adel, G. T., Luttrell, G. H., Mankosa, M. J. and Weber, A. T., "Microbubble Flotation of Fine Particles," Symposium on Interfacial Phenomena in Biotechnology and Materials Separations, 18th Annual Fine Particle Society Meeting, Boston, Massachusetts, August 3-7, 1987.

60. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Development of the Microbubble Column Flotation Process," 2nd International Conference on Processing and Utilization of High-Sulfur Coals, Carbondale, Illinois, September 27 - October 1, 1987.

61. McCreary, T. W., Long, G. L. and Yoon, R.-H., "Characterization of Sulfur Emission Lines in the UV and VIS regions for Coal Slurry Injection into the DCP," 14th Annual Meeting of the Federation of Analytical Chemistry and Spectroscopic Societies, Detroit, Michigan, October, 1987.

62. Yoon, R.-H., Adel, G. T., Luttrell, G. H. and Weber, A. T., "Scale-Up of the Virginia Tech Microbubble Column Flotation Process," Fourth Korea/USA Joint Workshop on Coal Utilization Technology, Seoul, Korea, October 19-21, 1987.

63. Adel, G. T., Yoon, R.-H. and Ehrich R. W., "Image Analysis Applications in Mineral Processing," Conference on Artificial Intelligence in Minerals and Materials Technology, Tuscaloosa, Alabama, October 20-21, 1987.

64. Mankosa, M. J., Adel, G. T., Luttrell, G. H. and Yoon, R.-H., "Model-Based Design of Column Flotation," 1987 Extractive and Process Metallurgy Fall Meeting on the Mathematical Modeling of Metals Processing Operations, Palm Springs, California, November 29- December 2, 1987.

65. Mielczarski, J. and Yoon, R.-H., "Spectroscopic Analysis of Collector Adsorption," Engineering Foundation Conference on Flocculation and Dewatering, Palm Coast, Florida, January 10-15, 1988.

66. Luttrell, G. H., Weber, A. T., Adel, G. T. and Yoon, R.-H., "Microbubble Flotation of Fine Coal," The International Symposium on Column Flotation, SME Annual Meeting, Phoenix, Arizona, January 25-28, 1988.

67. Honaker, R. Q., Luttrell, G. H. and Yoon, R.-H., "Selective Coagulation of Coal," SME Annual Meeting, Phoenix, Arizona, January 25-28, 1988.

68. Xu, Z. and Yoon, R.-H., "Theoretical Analysis of Selective Coagulation," SME Annual Meeting, Phoenix, Arizona, January 25-28, 1988.

69. Basilio, C. I., Leppinen, J. O., Yoon, R.-H., Nagaraj, D. R. and Wang, S. S., "Flotation and Adsorption Studies of Modified Thionocarbamates on Sulfide Minerals," SME Annual Meeting, Phoenix, Arizona, January 25-28, 1988.

70. Adel, G. T. and Yoon, R.-H., "Liberation Modeling of Multicomponent Systems," 1988 Meeting of the USBM Generic Mineral Technology Center on Comminution, Phoenix, Arizona, January 29, 1988.

71. McCreary, T. W., Long, G. L. and Yoon, R.-H., "Determination of Sulfur in Coal Slurries by DCP-OES," The Thirty-Ninth Pittsburgh Conference and Exposition on Analytical Chemistry and Applied Spectroscopy, Pittsburgh, Pennsylvania, February 22, 1988.

72. Young, C. A., Woods, R. and Yoon, R.-H., "A Voltammetric Study of Chalcocite Oxidation to Metastable Copper Sulfides," 173rd Meeting of The Electrochemical Society, Atlanta, Georgia, May 15-20, 1988.

73. Leppinen, J. O., Basilio, C. I. and Yoon, R.-H., "In-Situ FTIR SpectroscopicStudy of Ethyl Xanthate Electrosorption on Sulfide Minerals," 173rd Meeting of The Electrochemical Society, Atlanta, Georgia, May 15-20, 1988.

74. Luttrell, G. H., Adel, G. T. and Yoon, R.-H., "Hydrodynamics and Mathematical Modeling of Fine Coal Flotation," XVI International Mineral Processing Congress, Stockholm, Sweden, June 5-10, 1988.

75. Xu, Z. and Yoon, R.-H., "Modeling of Hydrophobic Interactions," 62nd Colloid and Surface Science Symposium (ACS), University Park, Pennsylvania, June 19-22, 1988.

35

76. Mielczarski, J. and Yoon, R.-H., "Spectroscopic Studies of the Structure of the Adsorption Layer of Thionocarbamate on Copper and Chalcocite," 62nd Colloid and Surface Science Symposium (ACS), University Park, Pennsylvania, June 19-22, 1988.

77. Mankosa, M. J., Adel, G. T., Luttrell, G. H. and Yoon, R.-H., "Scale-Up and Design Aspects of Column Flotation," 27th Annual Conference of Metallurgists, Canadian Institute of Mining and Metallurgy, Montreal, Quebec, August 28-31, 1988.

78. Luttrell, G. H. and Yoon, R.-H., "Determination of the Probability of Bubble-Particle Adhesion Using Induction Time Measurements," 27th Annual Conference of Metallurgists, Canadian Institute of Mining and Metallurgy, Montreal, Quebec, August 28-31, 1988.

79. Mielczarski, J. A., Yordan, J. L. and Yoon, R.-H., "FTIR External Reflection Study of Adsorbed Layers on Coal," Symposium on the Surface Chemistry of Coal, 196th ACS National Meeting, Los Angeles, California, September 25-30, 1988.

80. Yordan, J. and Yoon, R.-H., "Zeta Potential Measurements on Microbubbles Generated in the Presence of Colloidal Precipitates of Weak Electrolyte Type Surfactants," 7th International Symposium on Surfactants in Solution, Ottawa, Ontario, October 2-7, 1988.

81. Yoon, R.-H. and Adel, G. T., "Future Direction in Liberation Research," Utah Generic Center for Comminution Technology Workshop on Research Needs in Size Reduction, Modeling and New Technology, Snowbird, Utah, October 24, 1988.

82. Long, G. L., McCreary, T. W. and Yoon, R.-H., "Aspects of Rapid Analysis of Coal Slurry by DCP-OES," The Fifteenth Annual Meeting of the Federation of Analytical Chemistry and Spectroscopic Societies, November 2, 1988.

83. Adel, G. T. and Yoon, R.-H., "Effect of Liberation on Grinding Circuit Behavior," Advisory Committee Meeting for Generic Mineral Technology Center on Comminution, Salt Lake City, Utah, November 30, 1988.

84. Mielczarski, J. and Yoon, R.-H., "Spectroscopic (IR/FTIR) Structural Studies of Mono- and Multilayers on Solid Surfaces," American Oil Chemists' Society Symposium on New Horizons in Surfactant Development, Elizabeth, New Jersey, December 5, 1988.

85. Yoon, R.-H., Luttrell, G. H. and Adel, G. T., "Advances in Fine Particle Flotation," International Symposium on Challenges in Mineral Processing (SME Topical Conference), Berkeley, California, December 7-10, 1988.

86. Nagaraj, D. R., Lewellyn, M. E. and Yoon, R.-H., "Development of New Sulphide and Precious Metals Collectors," 118th Annual AIME/SME/TMS Meeting, Las Vegas, Nevada, February 27-March 2, 1989.

87. Nagaraj, D. R., Basilio, C. I. and Yoon, R.-H., "The Chemistry and Structure-Activity Relationships for New Sulfide Collectors," 118th Annual AIME/SME/TMS Meeting, Las Vegas, Nevada, February 27-March 2, 1989.

88. Mehta, R. K., Adel, G. T. and Yoon, R.-H. "Liberation Modeling and Parameter Estimation for Multicomponent Mineral Systems," 118th Annual AIME/SME/TMS Meeting, Las Vegas, Nevada, February 27-March 2, 1989.

89. Boron, D. J., Mankosa, M. J., Luttrell, G. H., Adel, G. T. and Yoon, R.-H. "Virginia Tech's Microbubble Flotation Technology," Coal Prep '89, Lexington, Kentucky, May 1-5, 1989.

90. Mielczarski, J. and Yoon, R.-H. "FTIR External Reflection Study of Molecular Orientation on Semiconductors," 7th International Conference on Fourier Transform Spectroscopy, Fairfax, Virginia, June 18-22, 1989.

91. Mielczarski, J., Zachwieja, J. and Yoon, R.-H. "Spectroelectrochemical Study of the Structure of Monolayers on a Semiconductor Electrode," 1989 Summer Symposium of the Division of Analytical Chemistry (American Chemical Society), Blacksburg, Virginia, July 24-26, 1989.

92. Mielczarski, J. and Yoon, R.-H. "Orientation of Thiol Collectors on Chalcocite," International Symposium on the Processing of Complex Sulfides, 28th Annual Conference of Metallurgists, Halifax, Nova Scotia, August 20-24, 1989.

36

93. Nagaraj, D. R., Basilio, C. I. and Yoon, R.-H. "The Chemistry and Structure-Activity Relationships for New Sulfide Collectors," International Symposium on the Processing of Complex Sulfides, 28th Annual Conference of Metallurgists, Halifax, Nova Scotia, August 20-24, 1989.

94. Paul, A. D. and Yoon, R.-H. "Electrocatalytically-Induced Liberation of Mineral Matter from Coal," Third International Conference on Processing and Utilization of High-Sulfur Coals, Ames, Iowa, November 14-17, 1989.

95. Adel, G. T., Wang, D. and Yoon, R.-H. "Image Analysis Characterization of Coal Flotation Products," Engineering Foundation Conference on Advances in Coal and Mineral Processing Using Flotation, Palm Coast, Florida, December 3-8, 1989.

96. Yoon, R.-H., Luttrell, G. H. and Adel, G. T. "Recent Advances in Fine Coal Flotation, "Engineering Foundation Conference on Advances in Coal and Mineral Processing Using Flotation, Palm Coast, Florida, December 3-8, 1989.

97. Mankosa, M. J., Adel, G. T., Luttrell, G. H. and Yoon, R.-H. "Modeling of Column Flotation with a View Toward Scale-Up and Control," Control '90/Mineral and Metallurgical Processing, 119th Annual SME Meeting, Salt Lake City, Utah, February 26 - March 1, 1990.

98. Luttrell, G. H., Yan, S., Adel, G. T. and Yoon, R.-H. "A Computer-Aided Design Package for Column Flotation," 119th Annual SME Meeting, Salt Lake City, Utah, February 26 - March 1, 1990.

99. Rojas, H., Adel, G. T. and Yoon, R.-H. "The Effect of Mill Operating Parameters on Mineral Liberation," 119th Annual SME Meeting, Salt Lake City, Utah, February 26 - March 1, 1990.

100. Yordan, J. L. and Yoon, R.-H. "Application of Heterocoagulation Theories to the Bubble-Particle Adhesion Process," 119th Annual SME Meeting, Salt Lake City, Utah, February 26 - March 1, 1990.

101. Mielczarski, J., Zachwieja, J. B. and Yoon, R.-H. "The Dual Role of Xanthate in the Induction of Hydrophobicity of Chalcocite," 119th Annual SME Meeting, Salt Lake City, Utah, February 26 - March 1, 1990.

102. Yoon, R.-H., "Progress Report - Virginia Center for Coal and Mineral Processing," Annual TDC Directors' Meeting, CIT Headquarters, Herndon, Virginia, April, 17, 1990.

103. Yoon, R.-H., "Virginia Center for Coal and Minerals Processing," Presentation at the President's Board Room, April 30, 1990.

104. Stallard, M. L., Basilio, C. I. and Yoon, R.-H. "Microbial Removal of Ash from Coals," First International Symposium on the Biological Processing of Coal, Orlando, Florida, May 1-3, 1990.

105. Yoon, R.-H., "Problems Associated with Pyrite Rejection," DOE Surface Chemistry Workshop, University of Pittsburgh, May 10-11, 1990.

106. Yoon, R.-H., "Hydrophobic Interactions in Coagulation," Surface Forces Workshop, National Institute of Standards and Technology, Gaithersburg, Maryland, May 31-June 1, 1990.

107. Luttrell, G. H. and Yoon, R.-H., "A Flotation Column Simulator Based on Hydrodynamic Principles," 2nd Workshop on Flotation of Sulphide Minerals, Lulea University of Technology, Lulea, Sweden, June 18-21, 1990.

108. Mielczarski, J. A., Xu, Z. and Yoon, R.-H. "Simulation of Reflection Spectra in In-Situ Adsorption Studies on Semiconductors," 64th Colloid and Surface Science Symposium (ACS), Bethlehem, Pennsylvania, June 18-20, 1990.

109. Mielczarski, J. A., Zachwieja, J. B. and Yoon, R.-H. "Structure of Monolayers on Metal and Semiconductor Electrodes," 64th Colloid and Surface Science Symposium (ACS), Bethlehem, Pennsylvania, June 18-20, 1990.

110. Yoon, R.-H., "Fine Particle Processing," Korean Institute of Science and Technology, Seoul, Korea, July 3, 1990.

111. Yoon, R.-H., "Hydrophobic Interactions," Syncrude, Edmonton, Canada, July, 16, 1990. 112. Yoon, R.-H., G. H., Luttrell, "Control of Pyrite Surface Chemistry in Physical Coal Cleaning,"

University Coal Research Peer Review, U.S. Department of Energy, Pittsburgh, Pennsylvania, July 18, 1990.

113. Yoon, R.-H., "Microbubble Column Flotation: An Effective Method for Separating Fine Particles," 21st Annual Meeting of Fine Particle Society, San Diego, California, August, 21-25, 1990.

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114. Yoon, R.-H., Yordan, J. L. and Xu, Z. "Dewetting of Particles Due to Hydrophobic Interactions During Flotation," 21st Annual Meeting of the Fine Particle Society, San Diego, California, August 21-25, 1990.

115. Celik, M. S. and Yoon, R.-H. "Adsorption of Ionic Surfactants on Coal," 21st Annual Meeting of the Fine Particle Society, San Diego, California, August 21-25, 1990.

116. Sanchez, E. M., Adel. G. T. and Yoon, R.-H. "Development of a Binary Size Reduction/Mineral Liberation Model," 29th Annual Conference of Metallurgists (CIM), Hamilton, Ontario, Canada, August 26-30, 1990.

117. Yoon, R.-H., "Virginia Center for Coal and Minerals Processing," Richland Coal Show, Richland Virginia, September 13, 1990.

118. Yoon, R.-H., "How University Research Can Help Industry Solve Its Problems," Advanced Coal Cleaning Technologies Symposium/Workshop, Blacksburg, Virginia, October 2-3, 1990.

119. Yoon, R.-H., "Column Flotation: Industrial Applications," Advanced Coal Cleaning Technologies Symposium/Workshop, Blacksburg, Virginia, October 2-3, 1990.

120. Yoon, R.-H. and Yordan, J. L. "The Role of Hydrophobic Interaction Energy in Destabilizing Thin Films During Flotation," VIII International Conference on Liquid Properties in Thin Layers, Kiev, U.S.S.R., October 2-5, 1990.

121. Yoon, R.-H., Adel, G. T., Luttrell, G. H. and Mankosa, M. J. "Pilot-Scale Testing of Microbubble Column Flotation," 11th International Coal Preparation Congress, Tokyo, Japan, October 22-26, 1990.

122. Yoon, R.-H., "Summary Report of the Poster Papers for Session DP: Process Evaluation and Management," 11th International Coal Preparation Congress, Tokyo, Japan, October 22-26, 1990.

123. Yoon, R.-H. "The Application of Column Flotation to Fine Coal Cleaning," Engineering Foundation Conference on Fine Coal Cleaning, Palm Coast, Florida, December 2-7, 1990.

124. Laskowski, J.S., Xu, Z. and Yoon, R.-H., "Energy Barrier in Particle-Bubble Attachment and Its Effect on Flotation Kinetics," XVII International Mining Processing Congress, Dresden, Germany, September 23-28, 1991.

125. Mehta, R.K., Dieudonné, V., and Yoon, R.-H., "Model Development and Heterogeneous Kinetics of Electrochemical Coal Oxidation," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

126. Adel, G.T., Mankosa, M.J., Luttrell, G.H., and Yoon, R.-H., "Full-scale Testing of Microbubble Column Flotation," Column '91, International Conference on Column Flotation, Sudbury, Ontario, Canada, June 2-6, 1991.

127. Yoon, R.-H., Lagno, M.L., Luttrell, G.L., and Mielczarski, J.A., "On the Hydrophobicity of Coal Pyrite," 4th International Conference on Processing and Utilization of High Sulfur Coals, Idaho Falls, Idaho, August, 1991.

128. Luttrell, G.H., Tao, D.P. and Yoon, R.-H., "The Effect of Froth Behavior on Column Flotation of Fine Coal," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

129. Honaker, R.Q., Luttrell, G.H. and Yoon, R.-H., "The Application of Hydrophobic Coagulation for Upgrading Ultrafine Coal," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

130. Basilio, C.I. and Yoon, R.-H., "Application of the Acid-Base Theory to Flotation Systems," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

131. Basilio, C., Yoon, R.-H., Nagaraj, D.R. and Lee, J., "Adsorption Mechanisms of Modified Thiol-Type Collectors," SME Annual Meeting, Denver, Colorado, February 25-28. 1991.

132. Mielczarski, J.A., Zachwieja, J. and Yoon, R.-H., "A Comparison of the Structure of Thiol Monolayers on Cu and Cu2S," 65th Colloid and Surface Science Symposium, the University of Oklahoma, Norman, Oklahoma, June 17-19, 1991.

133. Yoon, R.-H., Honaker, R.Q., and Luttrell, G.H., "Application of the Selective Hydrophobic Coagulation Process for Upgrading Carbonaceous Materials," Symposium on Physicochemical Problems of Mineral Processing, Sobotka, Poland, September 30-October 2, 1991.

134. Yoon, R.-H., Luttrell, G.H. and Adel, G.T., "In-Plant Testing of Microbubble Column Flotation," 7th Annual Coal Preparation, Utilization, and Environmental Control Contractors Conference, Pittsburgh, PA., July 15-18, 1991.

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135. Luttrell, G.H., Mankosa, M. and Yoon, R.-H., "In-Plant Testing of Microbubble Column Flotation," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

136. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," 7th Annual Coal Preparation, Utilization, and Environmental Control Contractors Conference, Pittsburgh, PA., July 15-18, 1991.

137. Adel, G.T., Wang, D. and Yoon, R.-H., "Washability Characterization of Fine Coal," Eighth Annual International Pittsburgh Coal Conference, October 14-18, 1991.

138. Yoon, R.-H., Xu, Z. and Yotsumoto, H., "Surface Forces in Bubble-Particle Interactions," 65th ACS Colloid and Surface Science Symposium the University of Oklahoma, Norman, Oklahoma, June 17-19, 1991.

139. Yoon. R.-H., Luttrell, G.H. and Zachwieja, J.B., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," U.S. Department of Energy - University Coal Research and Historically Black Colleges & Universities Contractors' Review Meeting, Pittsburgh, Pennsylvania, June 25-27, 1991.

140. Basilio, C.I., Kim, D.S., Yoon, R.-H. and Nagaraj, D.R., "Studies on the Use of Monothiophosphates for Precious Metals Flotation," International Symposium on Reagents in Minerals Engineering, Cornwall, England, September 18-20, 1991.

141. Yoon, R.-H., Nagaraj, D.R., Wang, S.S. and Hildebrand, T.M., "Alkyl Hydroxamate Collectors for the Flotation Separation of Anatase from Kaolin Clay," International Symposium on Reagents in Minerals Engineering, Cornwall, England, September 18-20, 1991.

142. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "Development of the MicrocelÔ Technology," 8th Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, October 14-18, 1991.

143. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "Development of the MicrocelÔ Technology," 8th Annual International Pittsburgh Coal Confernce, Pittsburgh, Pennsylvania, October 14-18, 1991.

144. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "In-Plant Testing of Microbubble Column Flotation," SME Annual Meeting, Denver, Colorado, February 25-28, 1991.

145. Yoon, R.-H., Nagaraj, D.R., Wang, S.S. and Hildebrand, T.M., "Beneficiation of Kaolin Clay by Froth Flotation using Hydroxamate Collectors," International Symposium on Reagents in Minerals Engineering, Cornwall, England, September 18-20, 1991.

146. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "Commercial Development of the MicrocelÔ Flotation Column," 8th Korea/ U.S. Joint Workshop on Coal Utilization Technology, Seoul, Korea, October 29-30, 1991.

147. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "Column Flotation: An Effective Method for Improving Fine Coal Quality," American Filtration Society 1991 National Meeting, College Park, October 20-23, 1991.

148. Luttrell, G.H. and Yoon, R.-H., "Development of Microbubble Flotation Technology," Symposium on Physicochemical Problems in Mineral Processing, Sobotka, Poland, Sept. 30 - Oct. 1, 1991.

149. Luttrell, G.H., Mankosa, M.J. and Yoon, R.-H., "Development of the Microbubble Column Flotation Technology," American Mining Congress Coal Convention, Pittsburgh, PA, June 2-5, 1991.

150. Yoon, R.-H., Mankosa, M.J., and Luttrell, G.H., 1992. "Improving Fine Particle Flotation using Microbubbles," 65th Annual Meeting of the Minnesota Section of SME and the 53rd Annual Mining Symposium at the University of Minnesota, Duluth, Minnesota, January 14-16, 1992.

151. Basilio, C.I., Yoon, R.-H., Kim, D., and Leppinen, J.O., "Interaction of Thiophosphinate Collectors with Precious Metals," 121st Annual SME Meeting & Exhibit, Phoenix, Arizona, February 24-27, 1992.

152. Basilio, C.I., Yoon, R.-H., and Paul, A.D., "Selective Liberation of Mineral Matter from Coal by Osmotic Pressure," 121st Annual SME Meeting & Exhibit, Phoenix, Arizona, February 24-27, 1992.

153. Yotsumoto, H., and Yoon, R.-H., "Developing an Extended DLVO Theory for the Stability of Silica and Rutile Suspension," Engineering Foundation Conferences: Dispersion and Aggregation: Fundamentals and Applications, Palm Coast, Florida, March 15-20, 1992.

154. Pugh, R.J., Aksoy, S., and Yoon, R.-H., "Hydrophobicity and Rupture of Fine Aqueous Films," Engineering Foundation Conferences: Dispersion and Aggregation: Fundamentals and Applications, Palm Coast, Florida, March 15-20, 1992.

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155. Schimmoller, B, Luttrell, G.H., and Yoon, R.-H., "Modeling of Bubble-Particle Aggregation," Engineering Foundation Conference on Dispersion and Aggregation: Fundamentals and Application, Palm Coast, Florida, March 15-20, 1992.

156. Luttrell, G.H., and Yoon, R.-H., "Methods for Improving Sulfur Rejection in Fine Coal Flotation Circuits," AMC Coal Convention, Cincinnati, Ohio, May 3-7, 1992.

157. Yoon, R.-H., Basilio, C.I., "Mechanism of Thionocarbamate Interaction in Flotation Systems," 181st Meeting of The Electrochemical Society, St. Louis, Missouri, May 17-22, 1992.

158. Nagaraj, D.R., Basilio, C.S., and Yoon, R.-H., "The Mechanism of Sulfide Depression with Functionalized Synthetic Polymers," 181st Meeting of The Electrochemical Society, St. Louis, Missouri, May 17-22, 1992.

159. Woods, R., Basilio, C.I., Kim, D.S., and Yoon, R.-H., "Interaction of Ethyl Xanthate with Silver and Silver/Gold Alloys," 181st Meeting of The Electrochemical Society, St. Louis, Missouri, May 17-22, 1992.

160. Richardson, P.E., Li, Y., and Yoon, R.-H., "The Photoelectrochemistry of In Situ Fractured Pyrite Electrodes," 181st Meeting of The Electrochemical Society, St. Louis, Missouri, May 17-22, 1992.

161. Rabinovich, Y., Guzonas, D., and Yoon, R.-H., "Long Range Interaction Forces Between Hydrophobic MICA Surfaces in Aqueous Electrolytes," 66th Colloid & Surface Science Symposium, Morgantown, West Virginia, June 14-17, 1992.

162. Honaker, R., Luttrell, G.H., and Yoon, R.-H., "Selective Hydrophobic Coagulation Process For Fine Coal Cleaning," 66th Colloid & Surface Science Symposium, Morgantown, West Virginia, June 14-17, 1992.

163. Yotsumoto, H., Yoon, R.-H., "Role of Repulsive Hydration Energy in the Stability of Synthetic Cassiterite," 66th Colloid & Surface Science Symposium, Morgantown, West Virginia, June 14-17.

164. Rabinovich, Ya. I., Guzonas and D.A. Yoon, R.-H., "The Structural Component of the Disjoining Pressure for Hydrophobic Mica in Water: Measurements and Mechanism," Gordon Conference, July 13-17, 1992.

165. Luttrell, G.H. and Yoon, R.-H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Eighth Annual Coal Preparation, Utilization, and Environment Control Contractor Conference, Pittsburgh, Pennsylvania, July 27-30, 1992.

166. Luttrell, G.H. and Yoon, R.-H., "Development of the Selective Hydrophobic Coagulation," Eighth Annual Coal Preparation, Utilization, and Environment Control Contractor Conference, Pittsburgh, Pennsylvania, July 27-30, 1992.

167. Adel, G.T. and Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," Tenth Annual Contractor's Technical Meeting, South Broadway, IL, August 4-6, 1992.

168. Yoon, R.-H., "New Methods for Enhancing sulfur Rejection in Flotation," Workshop on High Efficiency Coal Preparation, Mt. Vernon, Illinois, August 9-12,1992.

169. Yoon, R.-H., "Improving Sulfur Rejection in Coal Flotation," Ninth U.S.-Korea Joint Workshop on Coal Utilization Technology, San Francisco, California, October 18-20, 1992.

170. Yoon, R.-H., "Column Flotation-Plant Practice," Workshop on High Efficiency Coal Preparation, Mt. Vernon, Illinois, August 9-12, 1992.

171. Yoon, R.-H., "Column Flotation: Bubbles Size Control and Scale-up," Dept. of Mineral Process Engineering, University of British Columbia, Vancouver, Canada, February 19, 1993.

172. Yoon, R.-H., "Advances in Column Flotation," Cominco, Ltd., Trail, British Columbia, Canada, February 22, 1993.

173. Yoon, R.-H., "Surface Force Measurements on Bitumen," Syncrude Canada, Ltd., Edmonton, Alberta, Canada, February 23, 1993.

174. Yoon, R.-H., and Basilio, C.I., "Studies of Pyrrhotite Depression by DETA," INCO Metals, Ltd, Mississauga, Ontario, Canada, February 24, 1993.

175. Yoon, R.-H., and Rimmer, H.W., "Center for Coal & Minerals Processing - Annual Review," Center for Innovative Technology, Washington, D.C., February 25, 1993.

176. Yoon, R.-H., "Electrochemistry of Sulfide Minerals in Ore Processing," Dept. of Geological Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, February 25, 1993.

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177. Yoon, R.-H., Basilio, C.I., Finkelstein, N.F., and Richardson, P.E., "Improving Metallurgical Performance of the Red Dog Concentrator by Control of Chemistry," Red Dog Mine, Cominco Alaska, Alaska, April 5, 1993.

178. Yoon, R.-H., and Luttrell, G.H., 1993. "The Importance of Sparging Systems Design in Column Flotation," AIME - Southeast Kaolin: Geology, Development, and Processing, Augusta, Georgia, November 12-13, 1993.

179. R.-H. Yoon, "Center for Coal & Minerals Processing - Annual Review," Center for Innovative Technology, Washington, D.C., March 7, 1994.

180. R.-H. Yoon, P.E. Richardson, T.P. Tao, "Controlling Incipient Oxidation of Pyrite for Improved Rejection," University Coal Research Contractor's Review Conference, Pittsburgh, Pennsylvania, June 8-9, 1994.

181. R.-H. Yoon, "MicrocelTM," Professional Development Seminars, McGill University - Department of Mining and Metallurgical Engineering, May 13, 1994.

182. R.-H. Yoon, "Sulphide Floatation: Recent Advances," Professional Development Seminars, McGill University - Department of Mining and Metallurgical Engineering, May 13, 1994.

183. R.-H. Yoon, "Surface Forces in Colloid Chemistry," Oriental Chemical Industry, Co., Ltd., Seoul, Korea, October 17, 1994.

184. R.-H. Yoon, "Nanostructure Hydrocarbon Clusters and Their Role in Hydrophobic Force," Molecular and Neural Engineering Workshop, Virginia Commonwealth University, Richmond, Virginia, November 18, 1994.

185. Yoon, R.-H., Luttrell, G.H., Phillips, D., 1995. “The Role of Advanced Coal Preparation for Increasing the Production of Compliance Coal,” Engineering Foundation Conference: The Economic & Environmental Aspects of Coal Utilization VI,” Santa Barbara, California, January 29 - February 3, 1995.

186. Yoon, R.-H., “The Role of Surface Forces in Oil Sand Processing,” Syncrude Research: Extraction Fundamentals Seminar, Alberta, Canada, February 6, 1995.

187. Yoon, R.-H., “Mechanisms for the Depression of Pyrrhotite by Diethylene-triamine,” International Nickel Company, Sudbuerry, Ontario, Canada, February 8, 1995.

188. Yoon, R.-H., “Hydrophobic Dewatering Process,” Appalachian Clean Coal Technology Consortium Kick-Off Meeting, Pittsburgh, Pennsylvania, February 9-10.

189. Yoon, R.-H., “Clean Coal Technology Program in the U.S.,” a special lecture to a group of Chinese Delegation, Blacksburg, Virginia, February, 24.

190. Yoon, R.-H., “Center for Coal and Minerals Processing-1994-95,” Annual CIT TDC Meeting, February 22, 1995.

191. Yoon, R.-H., and Richardson, P.E., “Controlling Incipient Oxidation of Pyrite for Improved Rejection,” University Coal Research Principal Investigator Conference, Nashville, TN, June 13-14, 1995.

192. Yoon, R.-H., “Some Research Activities at the Center for Coal and Minerals Processing (CCMP),” Cytec Industries, Stamford, Connecticut, March 24, 1995.

193. Yoon, R.-H., “Deriving Flotation Kinetic Equation from First Principles,” Jullius Kruttshnitts Research Center, University of Queensland, Brisbane, Australia, Oct. 19, 1995.

194. Yoon, R.-H., “Hydrophobic Forces in Thin Aqueous Films,” Virginia Polytechnic Institute and State University, Blacksburg, Virginia, October 6, 1995.

195. Yoon, R.-H., “Column Flotation/Sulfide Flotation,” invited lecture, Pasminco, Broken Hill, Australia, October 13.

196. Yoon, R.-H., “New Development in Sulfide Flotation and Surface Force Measurements,” Sir Ian Wark Research Institute, Adelaide, Australia, October 16.

197. Yoon, R.-H., “Operational and Scale-up Problems in Column Flotation Practice,” Amdel, Ltd, Australia, October 16.

198. Yoon, R.-H., “Hydrophobic Forces in Thin Aqueous Films,” Tulane University, New Orleans, Louisiana, December 1, 1995.

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199. Yoon, R.-H., “Development of Clean Coal Technologies in the U.S.,” Research Institute of Energy and Resources, Seoul National University, Seoul, Korea, December 14, 1995.

200. Yoon, R.-H., Luttrell, G.H. and D.I. Phillips, 1995. “The Role of Advanced Coal Preparation for Increasing the Production of Compliance Coals,” Presentation at the Engineering Foundation Conference, The Economic and Environmental Aspects of Coal Utilization VI, Santa Barbara, California, January 29 - February 3, 1995.

201. Luttrell, G.H. and Yoon, R.-H., 1995. “Precombustion Removal of Hazardous Air Pollutant Precursors,” Fall Meeting of the Upgraded Coal Interest (UCI) Group, Pittsburgh, Pennsylvania, September 7-8, 1995.

202. Ravishankar, S.A. and Yoon, R.-H., 1996. “Long-Range Hydrophobic Forces in Amine Flotation of Quartz,” Annual SME Meeting, Phoenix, Arizona, March 11-14, 1996.

203. Yoon, R.-H., Chen, Z. and Richardson, P.E., 1996. “Electrochemistry of Activated Sphalerite,” Annual SME Meeting, Phoenix, Arizona, March 11-14, 1996.

204. Pazhianur, R., Adel, G.T., Yoon, R.-H., and Richardson, P.E. “Cathodic Protection to Minimize Corrosive Wear in Ball Mills,” 1996 SME Annual Meeting & Exhibit, Phoenix, Arizona, March 11-14, 1996.

205. Richardson, P.E., Chen, Z., Tao, D.P, and Yoon, R.-H., “Electrochemical Control of Pyrite Activation by Copper,” in Proceedings of the Fourth International Symposium on Electrochemistry in Mineral and Metal Processing, Los Angeles, California, May 5-10, 1996.

206. Mendiratta, N.K., Yoon, R.-H., and Richardson, P.E., “Electrochemical Impedance Spectroscopy of Freshly Fractured and Polished Pyrite Electrodes,” in Proceedings of the Fourth International Symposium on Electrochemistry in Mineral and Metal Processing, Los Angeles, California, May 5-10, 1996.

207. Basilio, C.I., Kartio, I.J., and Yoon, R.-H., “Lead Activation of Sphalerite during Galena Flotation,” in Proceedings of the Fourth International Symposium on Electrochemistry in Mineral and Metal Processing, Los Angeles, California, May 5-10, 1996.

208. Kartio, I.J., Basilio, C.I., and Yoon, R.-H., “An XPS Study of Sphalerite Activation by Copper,” in Proceedings of the Fourth International Symposium on Electrochemistry in Mineral and Metal Processing, Los Angeles, California, May 5-10, 1996.

209. Yoon, R.-H., Tao, D.P., Lu, M.X., and Richardson, P.E., “Improving Pyrite Rejection by Galvanic Control,” in Proceedings of the Fourth International Symposium on Electrochemistry in Mineral and Metal Processing, Los Angeles, California, May 5-10, 1996.

210. Yoon, Roe-Hoan, Vivek, S. and Flinn, Darrin H., 1996. “Hydration and Hydrophobic Force Measurements Using Atomic Force Microscope,” NEPTIS-5, Kyoto, Japan, December 8-10, 1996.

211. Yoon, R.-H. and Flinn, D.H., 1997. “Direct Force Measurements for Amine Flotation System,” Annual SME Meeting, Denver, CO, February 24-27, 1997.

212. Yoon, R.-H. “CCMP FY 96-97,” CIT/TDC Directors Meeting, Charlottesville, VA, March 26, 1997. 213. Mao, L. and Yoon, R.-H., 1997. “First-Order Flotation Rate Equation Incorporating Hydrodynamic

and Surface Forces,” SME Annual Meeting, February 24-27, 1997, Denver, Colorado, SME Preprint No. 97-100.

214. Phillips, Dennis I., Yoon, Roe-Hoan, Luttrell, Gerald H., Fish, Leslie, Toney, Anthony, 1997. “Installation of 4-Meter Diameter Microcel Flotation Columns at LadyDunn Preparation Plant,” 14th International Coal Preparation Exhibition & Conference, Lexington, KY, April 29-May 1, 1997.

215. Chen, Zhou and Yoon, Roe-Hoan, “Electrochemical Studies of Copper Activated Sphalerite at pH 9.2,” Proceedings of the 36th Annual Conference of Metallurgists, Sudbury, Ontario, August 17-20, 1997.

216. Yoon, Roe-Hoan, Mendiratta, Neeraj K. and Chen, Zhou, “The Role of Ferric Ions in the Adsorption of Xanthate on Activated Sphalerite and Chalcopyrite,” Proceedings of the 36th Annual Conference of Metallurgists, Sudbury, Ontario, August 17-20, 1997.

217. Pazhianur, Rajesh and Yoon, Roe-Hoan, “Direct Force Measurement for a Sulfide Mineral Flotation System,” Proceedings of the 36th Annual Conference of Metallurgists, Sudbury, Ontario, August 17-20, 1997.

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218. Yoon, R.-H. and Chen, X., “Comparison of Different Pyrrhotite Depressants in Pentlandite Flotation,” Proceedings of the 36th Annual Conference of Metallurgists, Sudbury, Ontario, August 17-20, 1997.

219. Yoon, Roe-Hoan and Luttrell, Gerald H., “Economic and Environmental Benefits of Improving Fine Coal Recovery and Dewatering,” Keynote Address in the Proceedings of the Coal Beneficiation Conference, Rotterdam, The Netherlands, June 24-25, 1997.

220. Pazhianur, R., Richardon, P.E. and Yoon, R.-H., “Reducing Corrosive Wear of Liners by Cathodic Protection,” Proceedings of the XX International Mineral Processing Congress, Aachen, Germany, September 21-26, 1997.

221. Yoon, R.-H. and Aksoy, B. Suha, “Hydrophobicity of Air Bubbles in Water,” Proceedings of the XX International Mineral Processing Congress, Aachen, Germany, September 21-26, 1997.

222. Pazhianur, Rajesh and Yoon, Roe-Hoan, “Direct Surface Force Measurements between Hydrophobic Glass Sphere and Covellite,” Keynote Lecture in the Proceedings of the 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria, July 6-12, 1997.

223. Yoon, Roe-Hoan and Aksoy, B. Suha, “Hydrophobic and Hydration Forces in Soap Films,” Proceedings of the 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria, July 6-12, 1997.

224. Vivek, S. and Yoon, Roe-Hoan, “Effects of Short-Chain Alcohols on the Hydration Forces between Silica Surfaces,” Proceedings of the 9th International Conference on Surface and Colloid Science, Sofia, Bulgaria, July 6-12, 1997.

225. Yoon, R.-H., Pazhianur, R., “AFM Force Measurement for Activated Sphalerite-Xanthate Interactions,” SME Preprint No. 98-162, Orlando, Florida, March 9-11, 1998.

226. Yoon, R.-H., Mendiratta, N., Chen, Z., “The Role of Ferric Ions in the Adsorption of Xanthate on Activated Sphalerite and Chalcopyrite,” SME Preprint No. 98-160, Orlando, Florida, March 9-11, 1998.

227. Yoon, R.-H., and Yildirim, I., “Improving Coarse Coal Flotation,” 1998 SME Annual Meeting & Exhibit, March 9-11, Orlando, Florida.

228. Basilio, C.I., Laajalehto, K., Kartio, I. and Yoon, R.-H., “XPS FTIR Spectroscopic Investigation of Xanthate Adsorption on Gold,” 1998 SME Annual Meeting & Exhibit, March 9-11, Orlando, Florida, 1998.

229. Yoon, R.-H., Basim, B., “Dewatering Fine Coal Using Novel Methods,” SME Preprint No. 98-161, Orlando, Florida, March 9-11, 1998.

230. Yoon, R.-H., Phillips, D.I. and Luttrell, G.H., “Industrial Applications of Advanced Fine Coal Cleaning and Dewatering Technologies,” the XIII International Coal Preparation Congress, Brisbane, Australia, October 4-10, 1998.

231. Vivek S. and Yoon, R.-H., “Surface Force Measurements with Activated Silica Surfaces in Sodium Oleate Solutions,” 72nd Colloid and Surface Science Symposium, Penn State University, June 21-24, 1998.

232. Luttrell, G.H. and Yoon, R.-H., “The Role of Coal Preparation in Controlling Trace Element Emissions,” Air Quality: Mercury, Trace Elements and Particulate Matter Conference, Tysons Corner, Virginia, December 1-4, 1998.

233. Chen, Z., and Yoon, R.-H., "Improving Flotation of Sphalerite by pH and Potential Control During Activation," SME Annual Meeting & Exhibit, Denver, Colorado, March 1-3, 1999.

234. Vivek, S., and Yoon, R.-H., "Effects of Hydrolyzable Cations on the Hydrophobic and Hydration Forces," SME Annual Meeting & Exhibit, Denver, Colorado, Preprint 99-154, March 1-3, 1999.

235. Vivek, S., and Yoon, R. –H., “Force Measurements between Activated Silica Surfaces in Sodium Oleate Solutions” SME Annual Meeting, Denver, Colorado, March 1-3, 1999.

236. Yoon, R.-H., “Surface Forces in Bubble-Particle Interactions,” in Symposium in Advances in Flotation Technology, a Special Symposium Honoring Professor, M.C. Fuerstenau, February, 1999.

237. Yoon, R. -H., Rabinovich, Ya. “Role of Asphaltene Polymers in the Processing of Tar Sand,” 38th Annual Conference of Metallurgists, Quebec Canada, August 22-26, 1999.

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238. Benvindo da Luz, A., Yildirim, I., Yoon, R. –H., “Purification of Brasilian Kaolin Clay by Flotation,” XXII International Mineral Processing Congress, Rome, Italy, July 23-29, 2000.

239. Yoon, R. –H., “The Role of Surface Forces in Flotation Kinetics,” XXII International Mineral Processing Congress, Rome, Italy, July 23-29,2000.

240. Yoon, R. –H., Pazhianur, R., “Hydrophobicity and the Hydrophobic Force,” SME Annual Meeting, Salt Lake City, Utah, February 28-March 1, 2000.

241. Yoon, R. –H., Hangsubcharoen, M., Luttrell, G. H., “Charging Mechanisms of Particles in Triboelectrostatic Separation,” SME Annual Meeting, Salt Lake City, Utah, February 28-March 1, 2000.

242. Yoon, R. –H., Pazhianur, R., “Application of Atomic Force Microscope for Mineral Processing Research,” Invited Lecture, SME Annual Meeting, Salt Lake City, Utah, February 28-March 1, 2000.

243. Yoon, R.-H., “Technology Transfer from the Metallurgical Industry,” Plenary Lecture, TAPPI Recycling Symposium, Washington, DC, March 5-8, 2000.

244. Mendiratta and, N.K., R.-H.Yoon, “Activation Energies for the Adsorption of Potassium Ethylxanthate on Sulfide Minerals from Tafel Studies,” the Electrochemistry of Minerals and Metallurgical Processing, the Electrochemical Society Annual Meeting, June, 2000.

245. Z. Chen and R.-H. Yoon, “Electrochemistry of Copper Activation of Sphalerite and Xanthate Adsorption,” the Electrochemistry of Minerals and Metallurgical Processing, the Electrochemical Society Annual Meeting, June, 2000.

246. N.K. Mendiratta, R.-H. Yoon, and S.W. Wilson, “Effects of Diethylenetriamine and Sulfur Dioxide on Pyrrhotite Depression,” the Electrochemistry of Minerals and Metallurgical Processing, edited by F.M. Doyle and R. Woods, The Electrochemical Society, June, 2000.

247. Yoon, Ramazan Asmatulu, Jerry Luttrell, and Tony Waters, “Advanced Fine Coal Dewatering Technologies Developed at Virginia Tech,” Pittsburgh Coal Conference, September 7, Pittsburgh, 2000.

248. Phazinur, R. and R.-H. Yoon, “Hydrophobicity and Hydrophobic Force,” Invited Lecture, Contact Angle, Newark, New Jersey, July, 2000.

249. Roe-Hoan Yoon, “Dewatering Fine Coals – Phase II.” Proceedings of the Upgraded Coal Interest Group Meeting, Federal Energy Technology Center, Pittsburgh, PA, May 10-11, 2000.

250. Roe-Hoan Yoon, Oh-Hyung Han, Byung Wuk Han, and Eric Yan, “Pilot-scale Testing of Vibrating Electrostatic Separator for Fly Ash Decarbonization,” Proceedings 2001 Conference on Unburned Carbon on Utility Fly Ash “Clean Power From Coal, ” May 15-16, 2001.

251. Yoon, R.H., Asmatulu, R., and Luttrell, G.H., “Development of Novel Fine Coal Dewatering Aids,” 18th International Coal Preparation Exhibition and Conferences, Coal Prep’ 2001, May 2001.

252. Yildrim and R.-H. Yoon “Contact Angles of Powders From Heats Of Immersion,” SME Annual Meeting, Denver Colorado, February 26-28, 2001.

253. N.K. Mendiratta, R.-H. Yoon and Steve Wilson, “Effects of Diethylenetriamine and Sulfur Dioxide on Pyrrhotite Depression,” SME Annual Meeting, February 26-28, Denver Colorado, 2001.

254. Yildirim, I. and Yoon, R.-H., “Surface Free Energy Characterization of Fine Particles,” SME Annual Meeting, Phoenix, Arizona, February 25-27, 2002.

255. Yordan, J. Kortmeyer, I,.Yildirim and R.-H. Yoon, “Studies of the Interactions between Talc and Stickies During Paper Recycling,” SME Annual Meeting, Phoenix, Arizona, February 25-27, 2002.

256. Yoon, R.H., Asmatulu, R., B. Basim, Luttrell, G.H., and A. Walters, “Pilot-scale testing of Novel Dewatering Aids,” XIV International Coal Preparation Congress and Exhibion, Johannesburg, South Africa, March 11-15, 2002.

257. Yoon, R.H., Asmatulu, R., and Luttrell, G.H. “Extending the Upper Particle Size Limit for Flotation,” XIV International Coal Preparation Congress and Exhibion, Johannesburg, South Africa, March 11-15, 2002.

258. D.H. Flinn and R.-H. Yoon, “Surface Forces in Quartz-Amine Flotation Sysyetm,” Conference on Flotation and Flocculation: from Fundamentals to Applications, Hawaii, July 28-August 4, 2002.

259. R.H. Yoon, R. Asmatulu, and M.K. Eraydin, “Pilot Scale Testing of Novel Fine Particle Dewatering Aids,” SME Annual Meeting & Exhibit, Cincinnati, Ohio, February 24-26, 2003.

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260. R. H. Yoon and R. Pazhianur “A Model for the Origin of Hydrophobic Force,” SME Annual Meeting & Exhibit, Cincinnati, Ohio, February 24-26, 2003.

261. Ismail Yildirim, Jinhong Zhang, and R.H. Yoon, “Effect of Surface Treatment on the Acid Base Properties of Fillers and Pigments,” Symposium for Functional Fillers and Nanoscale Minerals, Cincinnati, Ohio, February 24-26, 2003.

262. S. Vivek and R.H. Yoon, “Adsorption of Hydrolizable Cations on Hydrophobized Silica,” SME Annual Meeting & Exhibit, Cincinnati, Ohio, February 24-26, 2003.

263. Yoon, R.-H., Luttrell, G.H., Henry, C.D., and Jamison, P.R., “Use of Advanced Separation Technologies for Sustainable Mining,” International Conference on Sustainable Development Indicators in the Minerals Industry (SDIMI 2003), Milos Conference Center – George Eliopoulos, Milos, Greece, May 21-23, 2003.

264. Luttrell, G.H., Burchett, R.T., and Yoon, R.-H., “Economic Benefits of Improved Moisture Reduction in Coal Preparation Plants,” 20th Annual International Pittsburgh Coal Conference, Pittsburgh, Pennsylvania, September 15-19, 2003.

265. Asmatulu, R. and Yoon, R.-H., “Hyperbaric Centrifugal Filtration,” SME Annual Meeting, February 23-25, Denver, Colorado, 2004.

266. Mao. L., Wang, L., and Yoon, R.-H., “Hydrophobicity of Oil Droplets in Water,” SME Annual Meeting, February 23-25, Denver, Colorado, 2004.

267. Michael R. Brady, Pavlos P. Vlachos, and Demetri P. Telionis, Ian Sherrell, and Roe-Hoan Yoon, “Turbulent Bubble-particle Interactions Measured by Particle Image Velocimetry (PIV),” SME Annual Meeting, Denver, CO, February 23-25, 2004.

268. Luttrell, G.H., Honaker, R.Q., and Yoon, R.-H., “Optimization of the Coal Fuel Supply Chain: A Coal Preparation Perspective,” 29th International Technical Conference on Coal Utilization and Fuel Systems, Sheraton Sand Key, Clearwater, Florida, 2004.

269. L. Wang and R.-H. Yoon, “Hydrophobic Forces in Thin Aqueous Films and Their Role in Film Thinning”, Fifth European Conference on Foams, Emulsions and Applications. University of Marne-la-Vallée, Champs-sur-Marne, France, July 5-8, 2004.

270. R.-H. Yoon, “Development of Chrome-Free Conversion Coatings for EG Steel,” invited paper at the Symposium for Chrome-Free Treatment of Steel, Pohang, Korea, August 18, 2004.

271. R.-H. Yoon, “Center fro Advanced Separation Technologies,” invited paper, Technology Workshop, MineExpo 2004, Las Vegas, September 30, 2004.

272. R.-H. Yoon, “Center for Advanced Separation Technologies – An Update for the Latest Development from CAST,” keynote paper, Coal and Aggregate Processing Exhibition and Conference, May 3, 2005.

273. L. Wang and R. Yoon, “Hydrophobic Interactions between the Air Bubbles in Water”, SME Annual Meeting, Salt Lake City, Utah, U.S.A., February 28-March 2, 2005.

274. R.-H. Yoon, “Minimizing Environmental Impacts for Using Coal,” Invited Paper, Hoseo University, Korea, August 24, 2005.

275. R.-H. Yoon, “Application of Advanced Separation Technologies for Coal Cleaning,” invited paper at a special meeting organized by Shanxi Environmental Protection Agency, Taiyuan, Shanxi, China.

276. R.-H. Yoon, “Modeling Flotation from First Principles,” Invited lecture at China University of Mining and Technology, Beijing, Bejing, China, March 14, 2005.

277. R.-H. Yoon, “Hydrophobic Interactions in Flotation,” Invited Lecture at Central South University of China for the occasion of receiving Honorary Professorship, Changsha, Hunan, China, March 15, 2005.

278. R.-H. Yoon, “Modeling Flotation from First Principles,” Invited Lecture at North East University, Shenyang, China, March 16, 2005.

279. Brady, M.R., Telionis, D. P., Vlachos, P.P. and Yoon, R-H. “ Velocities of Particles in Grid Turbulence Measured by Particle Image Velocimetry” Centenary of Flotation Symposium, Brisbane Australia, June 6-9, 2005.

280. Brady, M.R., Vlachakis, V.N., Vlachos, P.P., Telionis, D.P. and Yoon R.-H. “ Time-Resolved DPIV Measurements of Turbulence Characteristics in a Stirring Vessel Agitated by a Rushton Impeller”,

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First International Symposium on Experiments/Process/Systems Modeling/Simulation. Athens, Greece, July 6-9, 2005.

281. R.-H. Yoon, “Minimizing Environmental Impacts for Using Coal,” Invited Paper, Hoseo University, Korea, August 24, 2005.

282. Brady, M.R., Telionis, D. P., Vlachos, P.P. and Yoon, R-H. “ Velocities of Particles in Grid Turbulence Measured by Particle Image Velocimetry” Centenary of Flotation Symposium, Brisbane Australia, June 6-9, 2005.

283. Brady, M.R., Vlachakis, V.N., Vlachos, P.P., Telionis, D.P. and Yoon R.-H. “ Time-Resolved DPIV Measurements of Turbulence Characteristics in a Stirring Vessel Agitated by a Rushton Impeller”, First International Symposium on Experiments/Process/Systems Modeling/Simulation. Athens, Greece, July 6-9, 2005.

284. R.-H. Yoon, “Center for Advanced Separation Technologies,” Central Research Laboratory, BHP Billiton, New Castle, Australia, June 3, 2005.

285. Zhang, J., Yoon, R.-H. and Eriksson, J.C. “Effect of Chain Length on the Hydrophobic Forces Measured between Silica Surfaces in CnTACl Solutions,” Surface Forces, XIIIth International Conference, Moscow, Russia, June 28-July 4, 2006,

286. Wang, L., Wang, R. and Yoon, R.-H., “Stabilities of Foams And Single Foam Films in the Presence of Methyl Isobutyl Carbinol and Polypropylene Glycols,” EUFOAM 2006, 6th European Conference and Applications,” Potsdam, Germany, July 2-6, 2006.

287. Wang, L. and Yoon, R.-H., “Stability of Foams in the Presence of Ionic and Non-Ionic Surfactants,” International Mineral Processing Congress, Istanbul, Turkey, Sep. 3-8, 2006.

288. Do, H.-S. and Yoon, R.-H., “A Turbulent Flotation Model Derived from First Principles,” International Mineral Processing Congress, Istanbul, Turkey, Sep. 3-8, 2006.

289. Wang, L. and Yoon, R.-H., “Effects of Surface Forces and Film Elasticity on Foam Stability,” UBC-McGill Bi-annual International Symposium, Canadian Institute of Mining, Metallurgy and Petroleum, Montreal, Canada, Oct. 1-4, 2006.

290. Zhang, J. and Yoon, R.-H., “Hydrophobic Forces Measured Between Silica Surfaces Coated With CnTACl Homologues,” UBC-McGill Bi-annual International Symposium, Canadian Institute of Mining, Metallurgy and Petroleum, Montreal, Canada, Oct. 1-4, 2006.

291. Eryadin, M.K., Burchett, R.T., Zhang, J., Luttrell, G.H., and Yoon, R.-H., “Development of Advanced Technologies for Fine Coal Dewatering,” International Coal Preparation Congress, Beijing, China, October 17-21, 2006.

292. Luttrell, G.H. and Yoon, R.-H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Technical Presentation, Center for Advanced Separations (CAST), CAST I Review Meeting, U.S. Department of Energy (DOE), Morgantown, West Virginia, July 20, 2006.

293. Luttrell, G.H. and Yoon, R.-H., “Development of a Novel Fine Particle Centrifuge,” Technical Presentation, Center for Advanced Separations (CAST), CAST I Review Meeting, U.S. Department of Energy (DOE), Morgantown, West Virginia, July 20, 2006.

294. Yoon, R.-H. and Luttrell, G.H., “Improving Coarse Particle Flotation,” Technical Presentation, Center for Advanced Separations (CAST), CAST I Review Meeting, U.S. Department of Energy (DOE), Morgantown, West Virginia, July 20, 2006.

295. Wang, L., Wang, R. and Yoon, R.-H., “Stabilities of Foams and Single Foam Films in the Presence of Methyl Isobutyl Carbinol and Polypropylene Glycols,” EUFOAM 2006, 6th European Conference and Applications,” Potsdam, Germany, July 2-6, 2006.

296. Zhang, J, Wang, J., Flinn, D., Pazhanur, R., Yoon, R-H., and Eriksson, J. C., “Effect of Chain Length on Hydrophobic forces,” XIII International Conference on Surface Forces, Moscow, Russia, June 28-July 4, 2006.

297. Yoon, R.-H., “Flotation for Coal Recovery and Tailings Management,” invited paper at the North Western Mining Conference, December 8, Reno, Nevada, 2006.

298. Wang, J., Eriksson, J.C., Yoon, R.-H., “Surface Forces Measured between Gold Surfaces Coated with Self-Assembled Monolayers of Thiols and Xanthates in Water,” 81st Colloid & Surface Science Symposium, University of Delaware, Newark, Delaware, June 24-27, 2007.

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299. Wang, R., and Yoon, R.-H., “Stability of Foams and Single Foam Films in the Presence of n-Alkylpolyoxyethylene Homoloughes,” 81st Colloid & Surface Science Symposium, University of Delaware, Newark, Delaware, June 24-27, 2007.

300. Zhang, J.and Yoon, R.-H., “Determination of the Basal and Edge Surface Free Energies of Talc Using the Acid-Base Theory,” 81st Colloid & Surface Science Symposium, University of Delaware, Newark, Delaware,June 24-27, 2007.

301. Wang, J., Eriksson, J.C., and Yoon, R.-H., “Surface Forces Measured between Gold Surfaces Coated with Self-Assembled Monolayers of Thiols and Xanthates in Water,” 81st Colloid and Surface Science Symposium, University of Delaware, Newark, Delaware, June 24-27, 2007.

302. Wang, J., Zhang, J., Ma, M., and Yoon, R.-H., “Force Measurement between Hydrophobic Surfaces,” CAST Workshop, Blacksburg, Virginia, July 24-26, 2007.

303. Do, H., Yang, Y., Vlachos, P., Telionis, D., and Yoon, R.-H., “Developing a Comprehensive Flotation Model,” CAST Workshop, Blacksburg, Virginia, July 24-26, 2007.

304. Do, H., Brady, M., Wang, Y., Telionis, D., Vlachos, P., and Yoon, R.-H., “Studies of Froth Behavior and Model development,” CAST Workshop, Blacksburg, Virginia, July 24-26, 2007.

305. Eraydin, K., Smith, K., Luttrell, G.H., and Yoon, R.-H., “Development of New Technologies for Fine Particle Dewatering,” CAST Workshop, Blacksburg, Virginia, July 24-26, 2007.

306. Yoon, R.-H., “Developing a Comprehensive Flotation Model,” Perth Technology Center, BHP Billiton, Perth, Australia, August 13, 2007.

307. R.-H. Yoon, “Coal Preparation R&D at CAST,” Tata RDDC, Pune, India, August 20, 2007. 308. R.-H. Yoon, “Fine Coal Beneficiation and Recovery,” Workshop on Coal Beneficiation and

Utilization of Rejects Initiatives, Policies and Practices, August 22-24, 2007. 309. R.-H. Yoon, “Improving Fine Coal Processing and Maximizing Plant Yield,” Istanbul Technical

University, January 31, 2008. 310. R.-H. Yoon and A. Sum, “Research on Hydrophobic Interaction and Hydrate,” NETL, Pittsburgh, PA,

February 20, 2008. 311. Wang, J. and Yoon, R.-H., “Surface Forces Measures between Gold Surfaces Coated with Self-

Assembled Monolayers of Thiols,” invited paper presented at the Trends in Surface Chemistry, Surface Chemsitry Conference 2008, Zing Conference Series, Antigua, January 7-10, 2008.

312. L.G. Wang, and R.H. Yoon, “Effect of Elasticity and Surface Forces on the Stability of Foams and Lamellae Films in the Presence of Flotation Frothers”, XXIV International Mineral Processing Congress, Beijing, China, September 24-28, 2008.

313. J. H. Zhang, R.H. Yoon, “Surface Force Measurement between Oxide Surfaces in CnTACl Solution Using an Atomic Force Microscope”, XXIV International Mineral Processing Congress, Beijing, China, September 24-28, 2008.

314. M. Eraydin, S. Keles, K. Smith, G. Luttrell, R.H. Yoon, “Development of Advanced Dewatering Technologies”, XXIV International Mineral Processing Congress, Beijing, China, September 24-28, 2008.

315. R.-H. Yoon and L. Wang, “Effect of pH and Electrolyte on the Stability of Surfactant-free Foam Films”, SME Annual Meeting, Denver, Colorado, U.S.A., February 22-25, 2009.

316. S. Vivek, R.-H. Yoon, and M.C. Fuerstenau, “A Model for the Adsorption of Hydrolysable Cations on Silica,” SME Annual Meeting, Denver, Colorado, U.S.A., Preprint 09-131, February 22-25, 2009.

317. Jialin Wang, Jan Christer Eriksson, Roe-Hoan Yoon, “Surface Forces Measured Between Hydrophobic Gold Surfaces in n-Alcohols and in Water-Ethanol Mixtures,” 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, New York, NY, June 14 – 19, 2009.

318. Jialin Wang, Jan Christer Eriksson, Roe-Hoan Yoon, “Thermodynamics of Macroscopic Hydrophobic Interaction,” 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, New York, NY, June 14 – 19, 2009.

319. Liguang Wang and Roe-Hoan Yoon, “Hydrophobic Forces in Thin Aqueous Films Confined between Air Bubbles,” 13th IACIS International Conference on Surface and Colloid Science and 83rd ACS Colloid and Surface Science Symposium, New York, NY, June 14 – 19, 2009.

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320. Roe-Hoan Yoon, “Cost Effective Technology for Beneficiation and Recovery of Fine Coal,” U.S.-India 6th Coal Working Group Meeting, L’Enfant Plaza Hotel, Washington, D.C., September 23, 2009.

321. Roe-Hoan Yoon, “Harvesting Algae Using Advanced Flotation and Dewatering Technologies,” National Energy Technology Laboratory, Pittsburgh, PA, May 12, 2009.

322. Roe-Hoan Yoon, “Cost Effective Technology for Beneficiation and Recovery of Fine Coal,” U.S.-India 6th Coal Working Group Meeting, L’Enfant Plaza Hotel, Washington, D.C., September 23, 2009.

323. Roe-Hoan Yoon, Jerry Luttrell and Robert Bratton, “Role of Advanced Coal Cleaning Technologies in Greenhouse Gas Reduction,” 2009 Asia Pacific Economic Council (APEC) Clean Fossil Technical and Policy Seminar, Song-Do, Korea, October 12-14, 2009.

324. Hyunsun Do, Yihong Yang, Kyle Kelley, Demetri Telionis, and Roe-Hoan Yoon “Modeling Flotation: Froth Behavior,” FLSchmidth Minerals Workshop on Development of a Comprehensive Model for the Simulation, Scale-up and Design of Large Flotation Machines, Blacksburg, VA, October 26-28, 2009.

325. Roe-Hoan Yoon, “Overview of Virginia Tech Capabilities and Facilities,” Workshop for Research and Engineering Services Contract,” National Energy Technology Laboratory, Pittsburgh, PA, February 8, 2010.

326. Hyunsun Do, Kyle Kelley, Lei Pan, Ruija Wang, Sunghwan Jung, and Roe-Hoan Yoon “Froth Recovery Model,” FLSchmidth Minerals Workshop on Development of a Comprehensive Model for the Simulation, Scale-up and Design of Large Flotation Machines, Blacksburg, VA, April 5-7, 2010.

327. Lei Pan and Roe-Hoan Yoon, “Hydrophobic Forces in the Wetting Films of Water Formed on Xanthate-coated Gold Surfaces,” Faraday Discussion 146, Wetting Dynamics of Hydrophobic and Structured Surfaces, Richmond, Virginia, April 12-14, 2010.

328. Yoon, R.H., Keles, S. Luttrell, G.H., Estes, T., Schultz, W. and Bethell, P., “Development of the Centribaric Dewatering Technology,” Proceedings, XVI International Coal Preparation Congress (ICPC), April 25-30, Lexington, Kentucky, pp. 488-495, 2010.

329. Addison, C., Jones, R., Addison, F., Stanley, F., Luttrell, G.H., Bratton, R.C. and Yoon, R.H., “Development of a Multi-Stream Monitoring and Control System for Dense Medium Cyclones,” Proceedings, XVI International Coal Preparation Congress (ICPC), April 25-30, Lexington, Kentucky, pp. 306-312, 2010.

330. Wang, L. and Yoon, R.H., “Surface Forces Measured between Xanthate-Coated Gold Surfaces,” Electrochemistry in Minerals and Metal Processing VI, Vancouver, April 25-30, 2010.

331. Keles. S., Luttrell, G.H., Yoon, R.H., Eraydin, M.K., Schultz, W., “Taking Advantage of the Centribaric Technology: Split Dewatering of Fine Coal,” 13th Australian Coal Preparation Conference, Sept. 13-16, McKay, Australia, 2010.

332. Zhang,J, Eraydin, M.K., Khan, S.U., Crosbie, M.G., Liu, J.F. Luttrell, G.H., and Yoon, R.H., “Development of Specialty Collectors for Coal Flotation,” Paper 9C, Proceedings of the 13th Australian Coal Preparation Conference, Sept. 13-16, McKay, Australia, 2010.

Invited Lectures (since 1982)

1. "Fine Particle Flotation Using Micro-Bubbles," Dow Chemical Company, Midland, Michigan, May, 1982.

2. "Fine Coal Cleaning Using Microgas Dispersion," Conference for University Coal Research Grantees, DOE Fossil Energy Program, Pittsburgh, Pennsylvania, September, 1982.

3. "Application of the General Image Processing System to the Beneficiation of Complex Sulfide Ores," Department of Metallurgy and Metallurgical Engineering, University of Utah, Salt Lake City, Utah, October, 1982.

4. "Fine Particle Processing," U.S. Bureau of Mines, Salt Lake City, Utah, October, 1982. 5. "Collectorless Flotation of Sulfide Minerals," Julius Kruttschnitt Mineral Research Centre,

University of Queensland, Brisbane, Australia, July, 1983.

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6. "Preparation of Super-Clean Coal and its Impact on Coal-Water Mixture Technology," Julius Kruttschnitt Mineral Research Centre, University of Queensland, Brisbane, Australia, July, 1983.

7. "Thermodynamics of Sulfide Flotation Systems," Julius Kruttschnitt Mineral Research Centre, University of Queensland, Brisbane, Australia, July 1983.

8. "Flotation of Fine Coal Using Micro-Bubbles," Department of Chemical Engineering, The University of Newcastle, New South Wales, Australia, July, 1983.

9. "Surface Chemistry of Sulfide Mineral Flotation," Division of Mineral Chemistry,C.S.I.R.O., Melbourne, Australia, July, 1983.

10. "Flotation of Fine Particles," Division of Mineral Engineering, C.S.I.R.O., Melbourne, Australia, July, 1983.

11. "Thermodynamics of Sulfide Flotation," Yun-Sei University, Seoul, Korea, October 1983. 12. "Recent Developments in Mineral Processing Research," Seoul National University, Seoul, Korea,

October, 1983. 13. "Beneficiation of Fine Coal," Korea Institute of Energy and Resources, Seoul, Korea, December

1984. 14. "Thermodynamics and Kinetics of Sulfide Mineral Processing," Korea Advanced Institute of Science

and Technology, Seoul, Korea, December 1984. 15. "Developments in Advanced Coal Cleaning Technologies," Korea Institute of Energy and

Resources, Seoul, Korea, December 1984. 16. "Progress in Coal Cleaning Research at VPI & SU," Annual Meeting of the AMVEST Corporation,

Charlottesville, Virginia, September 1985. 17. "Current Practices in Coal Preparation," Pittston Coal Company, (given in Blacksburg, Virginia)

October 1985. 18. "Use of Magnetite in Coal Industry," Reiss Viking Division, C. Reiss Coal Company, Bluefield, West

Virginia, December 1985. 19. "Trends in U.S. Coal Industry," Korea Advanced Institute of Science and Technology, Seoul, Korea,

November 1985. 20. "Development of New Coal Cleaning Technology," Yukong Limited, Seoul, Korea, November 1985. 21. "Hydrodynamics of Microbubble Flotation," Pittsburgh Energy Technology Center, U.S.

Department of Energy, Pittsburgh, Pennsylvania, January 28, 1986. 22. "Microbubble Flotation," McDonnell Douglas Energy Systems, Inc., Louisville, Kentucky, March

1986. 23. "Microbubble Flotation," Department of Civil Engineering, Virginia Polytechnic Institute and State

University, Blacksburg, Virginia, June 4, 1986. 24. "Preparation of Super-Clean Coal," DOE Contractor's Meeting, Pittsburgh Energy Technology

Center, U.S. Department of Energy, Pittsburgh, Pennsylvania, July 16, 1986. 25. "Coal Cleaning Research at Virginia Tech," Presentation made to College of Engineering

Committee of 100, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, October 10, 1986.

26. "Hydrodynamics of Flotation," Mineral Processing Section, The Pennsylvania State University, University Park, Pennsylvania, October 28, 1986.

27. "Fine Particle Flotation," Minerals Research Center, North Carolina State University, Asheville, North Carolina, March 19, 1987.

28. "Recent Developments in Column Flotation," Spring Meeting of the Carolinas Section of AIME, Washington, North Carolina, May 1, 1987.

29. "Preparation of Super-Clean Coal," DOE Contractor's Meeting, Pittsburgh Energy Technology Center, U.S. Department of Energy, Pittsburgh, Pennsylvania, July 7, 1987.

30. "Research Activities in Coal and Mineral Processing at Virginia Tech," American Cyanamid Company, Stamford, Connecticut, August 3, 1987.

31. "Scale-Up of Virginia Tech's Microbubble Flotation Technology," Pittston Coal Marketing and Development, Greenwich, Connecticut, August 4, 1987.

49

32. "Recent Developments in Column Flotation Technology and Its Potential for Use in the Clay Industry," Middle Georgia Subsection Meeting of AIME, Sandersville, Georgia, September 3, 1987.

33. "Progress in Microbubble Flotation Technology at Virginia Tech," Yukong, Limited, Seoul, Korea, October 28, 1987.

34. “Advances in the Chemistry of Sulfide Mineral Flotation,” a Workshop on Sulfide Mineral Flotation, Montreal, Canada, January 6, 1997.

35. "Scale-Up Model for Microbubble Column Flotation," Department of Mining and Minerals Engineering, Seoul National University, Seoul, Korea, October 28, 1987.

36. "Fine Particle Flotation," Department of Mining and Mineral Process Engineering, University of British Columbia, Vancouver, British, Columbia, Canada, November 9, 1987.

37. "Development of the Microbubble Column Flotation Process at Virginia Tech," EPRI/DOE Workshop on Microbubble Flotation, Homer City, Pennsylvania, December 3, 1987.

38. "Development of Microbubble Flotation Column Technology," Larox Oy, June 12, 1988. 39. "Development of Microbubble Flotation Column Technology," Outokumpu Oy, Outokumpu,

Finland, June 13, 1988. 40. "Scale-Up of Microbubble Column Flotation," J. M. Huber Corporation, Macon, Georgia, August 3,

1988. 41. "Microbubble Column Flotation," E.C.C. America, Inc., Sandersville, Georgia, August 4, 1988. 42. "Microbubble Column Flotation," Lithium Corporation of America, Bessemer City, North Carolina,

August 8, 1988. 43. "In-Plant Testing of Microbubble Column Flotation," Foote Minerals Company, King's Mountain,

North Carolina, August 8, 1988. 44. "Scale-Up of Column Flotation," Pittston Coal Company, Greenwich, Connecticut, August 15,

1988. 45. "New Collectors for Sulfide Minerals," American Cyanamid Company, Stamford, Connecticut,

August 16, 1988. 46. "Column Flotation," Canada Centre for Minerals and Energy Technology, Ottawa, Ontario, October

6, 1988. 47. "Virginia Center for Coal and Minerals Processing," Center for Innovative Technology, Herndon,

Virginia, January 31, 1989. 48. "Coal and Minerals Technology Center," Center for Innovative Technology, Herndon, Virginia,

April 26, 1989. 49. "Column Flotation," Beijing Graduate School, Ministry of Coal Industry, Beijing, China, May 5,

1989. 50. "Scale-Up of Column Flotation," Beijing Graduate School, Ministry of Coal Industry, Beijing, China,

May 6, 1989. 51. "Advances in Fine Particle Flotation," Beijing Graduate School, Ministry of Coal Industry, Beijing,

China, May 8, 1989. 52. "Deep Cleaning of Coal," Beijing Graduate School, Ministry of Coal Industry, Beijing, China, May 9,

1989. 53. "Electrochemistry of Sulfide Flotation," Beijing Graduate School, Ministry of Coal Industry,

Beijing, China, May 10, 1989. 54. "Advances in Column Flotation," China University of Mining and Technology, Xuzhou, China, May

12, 1989. 55. "Coal and Minerals Processing at Virginia Tech," Department of Mining and Petroleum Engineering,

Seoul National University, Seoul, Korea, May 24, 1989. 56. "Hydrophobic Coagulation," Kentucky Center for Applied Energy Research, University of Kentucky,

Lexington, Kentucky, May 29, 1989. 57. "Production of Superclean Coal Using Microbubble Flotation," Division of Mineral Engineering,

CSIRO, Melbourne, Australia, August 21, 1989. 58. "Recent Developments in Column Flotation," Central Research Laboratories, BHP Research and

New Technology, Shortland, NSW, Australia, August 23, 1989.

50

59. "Column Flotation," Mount Isa Mines, Ltd., Mount Isa, Queensland, Australia, August 29, 1989. 60. "Scale-Up of Column Flotation," Julius Kruttschnitt Minerals Research Centre, University of

Queensland, Brisbane, Australia, September 1, 1989. 61. "Clean Coal Research at Virginia Tech," National Communications Council, Virginia Tech,

Blacksburg, Virginia, September 16, 1989. 62. "Clean Coal Research at Virginia Tech," Center for Innovative Technology, Herndon, Virginia,

September 19, 1989. 63. "Microbubble Column Flotation for Improved Fine Particle Recovery," Department of Mineral

Science and Technology, Kyoto University, Kyoto, Japan, October 25, 1989. 64. "Microbubble Column Flotation," Japan Mining Industry Association, Hibiya, Tokyo, Japan,

October 27, 1989. 65. "Developments in Microbubble Flotation Technology," Denver Research Center, U.S. Bureau of

Mines, Denver, Colorado, November 2, 1989. 66. "Hydrophobic Interactions in Flotation," Department of Metallurgical Engineering, Colorado School

of Mines, Golden, Colorado, November 2, 1989. 67. "Advanced Coal Cleaning Technologies," Testimony at the Committee on Science, Space, and

Technology, U.S. House of Representatives, April 30, 1990. 68. "Problems Associated with Pyrite Rejection," DOE Surface Chemistry Workshop, University of

Pittsburgh, May 10-11, 1990. 69. "Hydrophobic Interactions in Coagulation," Surface Forces Workshop, National Institute of

Standards and Technology, Gaithersburg, Maryland, May 31-June 1. 70. "Fine Particle Processing," Korean Institute of Science and Technology, Seoul, Korea, July 3,

1990. 71. "Hydrophobic Interactions," Syncrude, Edmonton, Canada, July 16, 1990. 72. "Virginia Center for Coal and Minerals Processing," Richland Coal Show, Richland Virginia,

September 13, 1990. 73. "Summary Report of the Poster Papers for Session DP: Process Evaluation and Management," 11th

International Coal Preparation Congress, Tokyo, Japan, October 22-26, 1990. 74. "Overview of Coal Cleaning Research Activities at the Virginia Center for Coal and Minerals

Processing," Southern Illinois University, Carbondale, Illinois, August 1, 1991. 75. "Minerial Processing research at VCCMP," Red Dog Mine, Alaska, Cominco Alaska, March 1992. 76. "Improving Fine Particle Flotation Using Microbubbles," 53rd Annual University of Minnesota

Mining Symposium, January 16, 1992. 77. "A Progress in Mineral Processing Research," American Cyanamid Company, Stamford,

Connecticut, March 31,1992. 78. "Structural Forces in Coagulation and Dispersion," Invited Seminar at the Department of Materials

Science and Engineering, Spring 1992 Colloquium, Blacksburg, Virginia, April 10, 1992. 79. "Role of Surface Forces in Coagulation of Hydrophilie Collaids," NIST, Maryland, July 24, 1992. 80. "Surface Forces in Flotation," Beijing University of Science and Technology, Beijing, China,

September 25, 1992. 81. "Column Flotation," Northeast University of Technology, Shenjang, China, September 28, 1992. 82. "Fine Particle Flotation," Northeast University of Technology, Shenjang, China, September 29,

1992. 83. "Role or Steric Forces in Bitumen Coalesence," Syncrude Canada, Edmonton, Canada, October 27,

1992. 84. "Surface Forces in Coalesence," Dept. of Chemistry, VPI&SU, Nov. 9, 1992. 85. "Structural Forces in Coagulation and Dispersion," National Institute of Standard and Technology,

June 5, 1992. 86. "Role of Surface Forces in Coagulation of Hydrophilic Colloids," NIST, Maryland, July 24, 1992. 87. "Advanced Coal Cleaning Processes," Korea Institute of Energy and Resources, Daejeon, Korea,

Oct. 2, 1992.

51

88. "Application of Microbubbles for Improving the Performance of Household Laundry Machines," Goldstar Co. Ltd., Seoul, Korea, December 28, 1992.

89. "Electrochemistry of Sulfide Minerals in Ore Processing," Dept. of Geological Sciences, February 25, 1993.

90. "Application of Mineral Processing Techniques in Recycling," Kangwon University, Association of Mining Engineers, October 22, 1993.

91. "Column Flotation: Bubbles Size Control and Scale-up," Dept. of Mineral Process Engineering, University of British Columbia, Vancouver, Canada, February 19, 1993.

92. "Advances in Column Flotation," Cominco, Ltd., Trail, British Columbia, Canada, February 22, 1993.

93. "Surface Force Measurements on Bitumen," Syncrude Canada, Ltd., Edmonton, Alberta, Canada, February 23, 1993.

94. "Studies of Pyrrhotite Depression by DETA," INCO Metals, Ltd, Mississauga, Ontario, Canada, February 24, 1993.

95. "Center for Coal & Minerals Processing - Annual Review," Center for Innovative Technology, Washington, D.C., February 25, 1993.

96. "Improving Metallurgical Performance of the Red Dog Concentrator by Control of Chemistry," Red Dog Mine, Cominco Alaska, Alaska, April 5, 1993.

97. "Frothing Actions of New Sulfide Collectors," Cytec, Stamford, CT, May 3, 1993. 98. "MicrocelTM Column Technology," FCB, Lyon, France, June 7, 1993. 99. "MicrocelTM Column Flotation," Advanced Technologies for Mineral Processing - Three Years of

Innovation, Control International, S.A., Orleans, France, June 8-9, 1993. 100. "Mechanisms of Pyrrhotite Depression by DETA," INCO Metals, Ltd, Mississauga, Ontario, Canada,

October 4-5, 1993. 101. "Column Flotation," Mitsui Mining Company, Tokyo, Japan, October 12, 1993. 102. "Trends in Recycling Technology Development," KIER, Seoul, Korea, October 15, 1993. 103. "Recycling in the United States," Fall Meeting, Korean Mining Institute, Kang Won University,

Choon Chun, Korea, October 21, 1993. 104. "MicrocelTM Column Flotation - Scale-up and Operations," Minera '93 and AWGS Seminar,

Acapulco, Mexico, October 25-26, 1993. 105. "Advanced Froth Flotation Coal Cleaning" Advanced Coal Preparation Techniques Seminar, U.S.

Department of Energy, Pittsburgh, PA, November 3, 1993. 106. "The Importance of Sparging Systems Design in Column Flotation," AIME - Southeast Kaolin:

Geology, Development, and Processing, Augusta, Georgia, November 12-13, 1993. 107. "Advanced Coal Cleaning," NEDO, Tokyo, Japan, February 14, 1994. 108. "Center for Coal & Minerals Processing - Annual Review," Center for Innovative Technology,

Washington, D.C., March 7, 1994. 109. "Controlling Incipient Oxidation of Pyrite for Improved Rejection," University Coal Research

Contractor's Review Conference, Pittsburgh, Pennsylvania, June 8-9, 1994. 110. "MicrocelTM," Professional Development Seminars, McGill University - Department of Mining and

Metallurgical Engineering, May 13, 1994. 111. "Sulphide Floatation: Recent Advances," Professional Development Seminars, McGill University -

Department of Mining and Metallurgical Engineering, May 13, 1994. 112. "Application of MicrocelTM to Coal Flotation," New South Wales Coal Prep Society, Sydney,

Australia, July 28, 1994. 113. "Recent Developments in Coal Flotation," Queensland Coal Prep Society, Central Queensland,

Australia, August 3, 1994. 114. "Why Find Coal Cleaning?," Queensland Coal Prep Society, Brisbane, Australia, August 4, 1994. 115. "Clean Coal Technology," Virginia Coal and Energy Commission, Virginia Tech, CEC, August 31,

1994. 116. "Surface Forces in Colloid Chemistry," Oriental Chemical Industry, Co., Ltd., Seoul, Korea,

October 17, 1994.

52

117. "Nanostructure Hydrocarbon Clusters and Their Role in Hydrophobic Force," Molecular and Neural Enigneering Workshop, Virginia Commonwealth University, Richmond, Virginia, November 18, 1994.

118. “New Flotation Technologies from Basic Research,” plenary lecture, Cominco Ltd. Mineral Processors Meeting, British Columbia, Canada, February 2-3, 1995.

119. “Some Research Activities at Center for Coal and Minerals Processing (CCMP),” Cytec Industries, Stamford, Connecticut, March 24, 1995.

120. “Electrochemistry of Sulfide Mineral Flotation: Recent Advances” Outokumpu Oy, Outokumpu, Finland, June 19, 1995.

121. “Commercialization of Advanced Coal Cleaning Technologies,” special invited lecture, U.S. Department of Energy, Washington, D.C., August 2, 1995.

122. “Coal Preparation Consortium,” invited lecture, Coal Preparation Research in the U.S.: How Does It Help Industry and Who Pays For It?,” Roanoke, Virginia, November 16, 1995.

123. “Clean Coal Technology,” Energy Colloquium, Seoul National University, Seoul, Korea, Dec. 14, 1995.

124. “Novel Dewatering Technologies,” Pittsburgh Energy Technology Center, Pittsburgh, PA, April 10, 1996.

125. “Novel Dewatering Technologies,” Bird Machine Company, South Walpole, MA, April 12, 1996. 126. “Progress Report on Cytec Project,” Cytec Industries, Stamford, CT, April 12, 1996. 127. “Clean Coal Technologies,” Governor’s Marketing Staff Meeting, Richmond, VA, April 25, 1996. 128. “Development of Microcel and Dewatering Technologies,” KFX International, Arlington, VA, May

30, 1996. 129. “Advanced Coal Preparation,” U.S. Department of Energy, Germantown, MD, June 21, 1996. 130. “Coal Cleaning Research at CCMP,” a presentation to the Polish Mining Delegation visiting Virginia

Tech, September 3, 1996. 131. “Activities of CCMP during FY 95-96,” CIT Annual Review Meeting, Herndon, VA, March 5, 1996. 132. “The Chemistry of Sulfide Mineral Flotation,” The Korea Institute of Science and Technology,

Seoul, Korea, November 7, 1996. 133. “Triboelectrostatic Separation,” Mitsubishi Metals Company, Tokyo, Japan, December 13, 1996. 134. “Depression of Pyrrhotite Using Polymeric Depressants,” Cytec Industries, Stamford, CT,

December 19, 1996. 135. Yoon, R.-H. “Mining, Environment, and Recycling,” College of Engineering, Ewha Woman’s

University, Seoul, Korea, November 5, 1996. 136. Yoon, R.-H. “Advances in the Chemistry of Sulfide Mineral Flotation,” Noranda, Montreal,

Canada, January 6, 1997. 137. Yoon, R.-H. “CCMP FY 96-97,” CIT/TDC Directors Meeting, Charlottesville, VA, March 26, 1997. 138. Yoon, R.-H., “Research Activities at CCMP,” INCO, Sheridan Park, Ontario, Canada, February 25,

1998. 139. Yoon, R.-H., “Hydrophobic Forces in Mineral Processing,” Betzdearbone Chemical Company,

Jacksonville, Florida, March 9, 1998. 140. “Studies of the Mechanism of Rock Mineral Flotation at Clarabelle Mill, Submitted to INCO

Limited, J. Roy Gordon Research Laboratory, 2060 Flavelle Boulevard, Sheridan Park, Missisuaga, Ontario, Canada, February 12, 1998.

141. “Hydrophobic Forces and Advances in Flotation,” Programa de Engenharia Metalurgica e de Materiais, University of Rio de Janeiro, Brazil, July 16, 1998.

142. “Dewatering Fine Particles,” Department of Materials and Mineral Engineering,” University of California, Berkely, California, October 12, 1998.

143. “Surface Forces in Colloid Chemistry,” Department of Materials Science and Engineering,” Virginia Tech, Blacksburg, Virginia, January 29, 1999.

144. “Surface Chemistry of Fingerprint-Free Coatings,” Pohang Iron and steel Company, Korea, June 21, 1999.

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145. “Development of Chrome-Free Conversion Coatings,” Pohang Iron and Steel Company, Korea, March 13, 2000.

146. “Effect of Diethylenediamine and Sulfur Dioxide on the Pyrrhotite Depression,” Inco Technical Services, Ltd., Mississauga, Ontario, Canada, May 15, 2000.

147. “Surface Characterization of Talc,” invited lecture at Luzenac America, Denver, Colorado, September 22, 2000.

148. “Development of Non-Chrome Conversion Coatings for Cold-Rolled Steel,” Pohang Iron and Steel Company, Korea, January 29, 2001.

149. “Advanced Dewatering Technologies,” National Impoundment Committee, NRC, Pittsburgh, PA, April 11, 2001.

150. “Hydrophobic Forces at Solid/Water and Air/Water Interfaces,” Max Planck Institute of Colloids and Interfaces, Freiberg, Germany, January, 2002.

151. “Modeling Flotation from First Principles,” Julius Kruttschnitt Mineral Research Center, University of Queensland, Brisbane, Australia, September 15, 2003.

152. “Optimizing Fine Coal Flotation,” BHP-Mitsubishi Australia, Peak Downs, Queensland, Australia, September 16, 2003.

153. “Dewatering Fine Particles,” Chemical Engineering Department, University of Melbourne, Melbourne, Australia, September 19, 2003.

154. “Developing Novel Conversion Coatings,” Pohang Iron and Steel Company,” Pohang, Korea, September 26, 2003.

155. “Hydrophobic Force,” Research Institute for Green Technology, National Institute of Advanced Industrial Science & Technology, Tsukuba, Ibaraki, Japan, September 26, 2003.

156. “Center fro Advanced Separation Technologies,” Technology Workshop, MineExpo 2004, Las Vegas, September 30, 2004.

157. “Development of Chrome-Free Conversion Coatings for EG Steel,” Symposium for Chrome-Free Treatment of Steel, Pohang, Korea, August 18, 2004.

158. “Minimizing Environmental Impacts for Using Coal,” Hoseo University, Korea, August 24, 2005. 159. “Application of Advanced Separation Technologies for Coal Cleaning,” a special meeting

organized by Shanxi Environmental Protection Agency, Taiyuan, Shanxi, China. 160. “Modeling Flotation from First Principles,” Invited lecture at China University of Mining and

Technology, Beijing, Bejing, China, March 14, 2005. 161. “Modeling Flotation from First Principles,” Invited Lecture at North East University, Shenyang,

China, March 16, 2005. 162. “Center for Advanced Separation Technologies,” Central Research Laboratory, BHP Billiton, New

Castle, Australia, June 3, 2005. 163. “Advanced Coal Cleaning Research at Virginia Tech,” U.S.- India Coal Working Group Meeting,

Washington, D.C., November 18-22, 2005. 164. “Advanced Coal Cleaning Research at Virginia Tech,” Bechtel Engineering Company,

Fredricksburg, MD, February 1, 2006. 165. “Minerals Processing Research at Virginia Tech,” AMIRA International Council, Toronto, Canada,

March 22, 2006. 166. “Advanced Coal Cleaning,” Invited Lecture, at the Ido-U.S. Coal Technology Workshop, April 4,

New Deli, India, 2006. 167. “Modeling Flotation Based on Hydrophobic Forces,” Invited Lecture at China University of Mining

Technology,” Bejing, China, October 16, 2006. 168. “Hydrophobic Force,” Invited Lecture at Quinghua University, Department of Chemsitry, October

13, 2006. 169. “Energy and Environment-A Perspective,” Green Engineering Class, College of Engineering,

Virginia Tech, November 3, 2006. 170. “Surface Forces Measured between Gold Surfaces Coated with Self-Assembled Monolayers of

Thiols in Water,” Zing Conference, Antigua, January 7-10, 2007.

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171. “Hydrophobic Force-A New Natural Force?” National Energy Technology Laboratory, Pittsburgh, PA, January 18, 2007.

172. “Coal Beneficiation to Increase Efficiency and Lower Emissions,” Turkish-American Clean Energy Conference, Ritz-Carton Hotel, Istanbul, Turkey, Panel Member, January 28-30, 2007.

173. “Theory of Methane Hydrate Formation,” invited seminar at the Korea Geology and Mining (KIGAM), March 16, 2007.

174. “Advanced Coal Cleaning Research at Virginia Tech,” Indo-U.S. Coal Working Group Meeting, Washington, D.C., June 4-5, 2007.

175. “Development of a Flotation Model from First Principles,” Outokumpu Technology, Espoo, Finland, June 26, 2007.

176. “Flotation Model Based on First Principles,” Perth Technology Center, BHB Billiton, Perth, Australia, August 13, 2007.

177. “Hydrophobic Force Research at Virginia Tech,” Department of Chemistry, University of Pittsburgh, September 14, 2007.

178. “Advanced Coal Cleaning Technologies,” Turkish - American Clean Energy Conference Istanbul, Turkey, January 29-30, 2008.

179. “Improving fine coal processing and Maximizing plant yield,” Istanbul Technical University, Istanbul, Turkey, January 31, 2008.

180. “Research on Hydrophobic Interaction and Hydrate,” National Energy Technology Laboratory, U.S. Department of Energy, Pittsburgh, February 20, 2008.

181. “Hydrophobic Interactions and Hydrophobic Force,” Invited Lecture, Department of Chemical Engineering, City College of New York, March 16, 2009.

182. “Hydrophobic Interactions and the Origin of Hydrophobic Force,” Shandong University, Jinan, September 25, 2009.

183. “Hydrophobic Interactions in Flotation,” Central South University, Changsha, September 28, 2009.

184. “Hydrophobic Interactions in Flotation,” China University of Mining and Technology, Beijing, September 29, 2009.

185. “Hydrophobic Interactions and the Origin of Hydrophobic Force,” Beijing University, September 30, 2009.

186. “Modeling Hydrate Formation,” National Energy Technology Laboratory, Pittsburgh, PA, February 8, 2010.

187. “Hydrophobic Interacions:New Results with Wetting Films,” J.A. Kitchener Memorail Symposium, Imperial College, London, UK, July 1-2, 2010.

188. “Modeling Froth Phase Recovery,” FLSchmidt Salt Lake City Inc., Blacksburg, VA, Aug. 4, 2010. 189. “Modeling Flotation as Hydrophobic Interaction,” Department of Chemical Engineering, School of

Enginnering, University of Queensland, Brisbane, Australia, Sept. 17, 2010.

Short Courses Taught 1. "Intensive Coal Cleaning," Sixth International Workshop on Coal-Liquid and Alternate Fuels

Technology, Halifax, Nova Scotia, September 1986. 2. "Microbubble Flotation," Berol Nobel, Sweden, Oct. 3-5, 1991. 3. "Column Flotation," Mt. Vernon, I., August 10-12, 1992. 4. "Advances in Column Flotation," Universidad Tecnica, Federico Santa Maria, Chile, March 25-26,

1993. 5. "Hydrohynamics of Flotation," North East University, Xenyang, China (Marcy, pleas date). 6. "Advances in Column Flotation," Universidad Tecnica, Federico Santa Maria, Chile, March 25-26,

1993. 7. "Sparging Systems for Column Flotation," Park Royal Hotel, Sydney, Australia, May 26, 1993. 8. "Coal Cleaning Technology Development," CEC, Blacksburg, VA, August 6-7, 1993. 9. "Appalachian Clean Coal Technology Consortium," CEC, Blacksburg, VA, Dec. 15, 1993.

55

10. "Theory of Column Flotation and Its Application in Coal and Minerals Industries," Istanbul Technical University, Department of Mining Engineering, Istanbul, Turkey, May 30-June 1, 1994.

11. "Column Flotation," BMCH, Sydney, Australia, July 27-28, 1994. 12. “Column Flotation: Bubble generation and Scale-up,” VTT Mineral processing Laboratory,

Outokumpu, Finland, June 19, 1995. 13. “Electrochemistry of Sulfide Mineral Flotation: Recent Advances,” Outokumpu Oy, Outokumpu,

Finland, June 20, 1995. 14. “Column Flotation: Bubble Generation and Scale-Up,” Outokumpu Oy, Outokumpu, Finland, June

20, 1995. 15. “Optimal Design of Flotation Columns,” at BMCH, Ltd., Sydney, Australia, October 10, 1995. 16. “Column Flotation/Sulfide Flotation,” CRA Central Research Laboratory, Melbourne, Australia,

October 11, 1995. 17. “Column Flotation/Sulfide Flotation,” presented at the local Australian Institute of Mining and

Metallurgy meeting, Cobar, Australia, October 12, 1995. 18. “Column Flotation/Sulfide Flotation: New Development,” Western Mining, Ltd., Perth, Australia,

October 17, 1995. 19. “Column Flotation: Design of Bubble Generator,” Perth, Western Australia, October 18, 1995. 20. “Column Flotation,” Lulea University of Technology, Lulea, Sweden, February 15, 1996. 21. “Advances in Sulfide Mineral Flotation,” Lulea University of Technology, Lulea, Sweden, February

15, 1996. 22. “Column Flotation,” Cetem Centro de Tecnologia Mineral, Rio de Janeiro, Brazil, July 14, 1998. 23. “Kaolin Processing,” Cetem Centro de Tecnologia Mineral, Rio de Janeiro, Brazil, July 14, 1998. 24. “Sulfide Mineral Flotation,” Cetem Centro de Tecnologia Mineral, Rio de Janeiro, Brazil,July 15,

1998. 25. “Gold Extraction,” Cetem Centro de Tecnologia Mineral, Rio de Janeiro, Brazil, July 15, 1998. 26. “Advanced Separation Coal Mining and Preparation Technologies,” for delegation from Shanxi

Xishan Coal & Electricity Co., Ltd., 1:30 – 5:00 PM, Blacksburg, June 9-11, 2003. 27. “Advanced Fine Coal Cleaning,” for coal preparation engineers in New South Wales, Austlalia,

Singleton, New South Wales, Australia, October 17, 2003. 28. “Improving Fine Coal Cleaning,” for coal preparation engineers of New South Wales, Australia,

October 18, 2003. 29. “Flotation Model/Foam Stability,” for coal preparation enegineers in New South Wales, Australia,

2005. 30. “Flotation Column/Modeling Flotation/Foam Stability,” for coal preparation engineers in

Queensland, Australia, 2005. 31. “Recent Development in Advanced Fine Coal Cleaning Technologies,” Jharia, India, April 7-8,

2006. 32. “Advanced Coal Cleaning,” Nalco, McKay, Australia, August 15, 2007. 33. “Advanced Coal Cleaning,” Singleton, New South Wales, Australia, August 16, 2007; McKay,

Queensland, Australia, August 17, 2007. 34. “Advanced Coal Cleaning,” Tata Steel, Jamshedpur, India, December 12, 2007. 35. “Advanced Coal Preparation Technologies,” for Dengfeng Coal and Power Company, China, March

5, 2007, Blacksburg, VA. 36. “Flotation, Froth and Fine Coal Dewatering,” Darling Harbor, Sydney, Australia, October 24, 2008. 37. “Development of a Comprehensive Flotation Model,” The Inn at Virginia Tech, Nov. 17-18, 2008.

Workshops/Symposia Organized 1. “Symposium on the Surface Chemistry of Flotation,” 56th Colloid and Surface Science Symposium,

Blacksburg, Virginia, June 1982. 2. “Science and Technology of Processing Fine Coal,” Engineering Foundation Conference, Henniker,

New Hampshire, August 1985.

56

3. “Engineering Foundation Conference on Fine Coal Cleaning, Trout Lodge, Potosi, Missouri, December, 1990.

4. Tenth Annual International Pittsburgh Coal Conference, Pittsburgh, PA, Conference, Co-Chair, September 1993.

5. The 5th International Energy Conference, Seoul, Korea, Conference Chair, October 1993 6. “Appalachian Clean Coal Technology Consortium: Kick-Off Meeting,” Pittsburgh, Pennsylvania,

February 9-10, 1995. 7. “Coal Preparation Research: How Does It Help Industry and Who Pays for It,” Hotel Roanoke

Conference Center, Roanoke, Virginia, November 15-16, 1995. 8. Organizing Committee, Member, VI Southern Hemisphere Meeting on Mineral Technology, Rio de

Janeiro, Brazil, 2001. 9. “First Annual Workshop for Advanced Separation Technologies,” Charleston, West Virginia,

sponsored by U.S. Department of Energy, 120 participants, November 19-21. 10. “Centennial Symposium for Flotation”, Co-Chair with Professor Graeme Jameson, University of New

South Wasles, Brisbane, Australia, 450 participants, June 5-9, 2005. 11. “CAST 2005 Annual Workshop,” at the Inn at Viginia Tech and Skelton Conference Center, July 26-

28, 2005. 12. “CAST 2007 Annual Workshop,” at the Inn at Virginia Tech and Skelton Conference Center, July

2007. 13. “XIII International Conference on Surface and Colloid Science,” Member, Organizing Committee,

New York, NY, 2009. 14. XVI International Coal Preparation Congress, Member, Organizing Cmmittee, Lexington, KY, April

25-29, 2010.

Reports 1. Yoon, R.-H. and Sebba, F., "Microgas Dispersion for Fine Coal Cleaning," Technical Progress Report for

the Period September 1, 1980 - February 28, 1981, Report No. DOE/PC/30234-T1, 22 pp., 1981. 2. Yoon, R.-H., Halsey, G. S. and Sebba, F., "Microgas Dispersion for Fine Coal Cleaning, "Technical

Progress Report for the Period March 1 - August 31, 1981; Report No. DOE/PC/30234-T2, 50 pp., 1981. 3. Yoon, R.-H. and Sabey, J. B., "Coal Flotation in Inorganic Salt Solutions," Research Bulletin 1, Virginia

Center for Coal and Energy Research, 142 pp., 1982. 4. Craig, J. R., Haralick, R. M. and Yoon, R.-H., "Applications of Image Processing to the Comminution of

Fine-Grained Complex Sulfide Ores," Final Report Prepared for the Mineral Institutes Program, U.S. Bureau of Mines, 244 pp., 1983.

5. Yoon, R.-H., "Microbubble Flotation of Fine Coal”, Final Report Prepared for the U.S. Department of Energy, Report No. DOE/PC/30234-T3, 182 pp, 1984.

6. Yoon, R.-H., Pritzker, M. D. and Basilio, C., "Thermodynamic and Electrochemical Flotation Studies of Chalcocite and Pyrite Systems," A Report Prepared for the American Cyanamid Company, 35 pp., 1984.

7. Yoon, R.-H. and Adel, G. T., "Preparation of Super-Clean Coal”, Technical Progress Report for the Period September 15, 1983 - March 14, 1984; Report No. DOE/PC/60806-T1 (DE84012286), 33 pp., 1984.

8. Yoon, R.-H. and Paul, A. D., "The Production of Super-Clean Coal Using Electrochemical Methods," First Semi-Annual Progress Report to AMVEST Corporation, 25 pp., 1984.

9. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Preparation of Super-Clean Coal”, Technical Progress Report for the Period March 15 - September 14, 1984; Report No. DOE/PC/60806-T2 (DE85003708), 26 pp., 1985.

10. Yoon, R.-H., Adel, G. T. and Yordan, J. L., "Preparation of Super-Clean Coal: Zeta Potential Measurements on Microbubbles Generated Using Various Surfactants," Technical Progress Report for the Period September 15, 1984 - March 14, 1985; Report No. DOE/PC/60806-T3 (DE85012998), 44 pp., 1985.

57

11. Yoon, R.-H. and Paul, A. D., "The Production of Super-Clean Coal Using Electrochemical Methods," Progress Report and Suggestions for Future Work Prepared for AMVEST Corporation, 7 pp., 1985.

12. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Preparation of Super-Clean Coal: Improvements in Recovery and Selectivity," Technical Progress Report for the Period March 15 - September 14, 1985; Report No. DOE/PC/60806-T4 (DE86005368), 29 pp., 1986.

13. Yoon, R.-H., Adel, G. T. and Mankosa, M. J., "Preparation of Super-Clean Coal: Effect of Media Size in Stirred Ball Mill Grinding," Technical Progress Report for the Period September 15, 1985 - March 14, 1986; Report No. DOE/PC/60806-T5, 28 pp., 1986.

14. Yoon, R.-H., "Continued Work on Ashland Coal Sample," Report Prepared for Ashland Development, Incorporated, Ashland, Kentucky, September 3, 1986, 2 pp., 1986.

15. Yoon, R.-H. and Hale, W. M., "Preliminary Microbubble Flotation Tests on Pittsburgh No. 8 and Jericho Seam Coals," Report Prepared for Conoco, Incorporated, Library, Pennsylvania, May 20, 1986, 21 pp., 1986.

16. Yoon, R.-H., "Results of Continuous Microbubble Flotation Tests Conducted on Jericho Seam Coal," Report Prepared for Conoco, Incorporated, Library, Pennsylvania, June 7, 1986.

17. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Preparation of Super-Clean Coal," Final Report to the U.S. Department of Energy, Report No. DOE/PC/60806-T6, 199 pp., 1987.

18. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "Liberation Analysis Using a Simple Image Processing System," National Science Foundation Report (NSF/ENG-85091), 1987.

19. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "A Size Reduction/Liberation Model of Grinding Including Multiple Classes of Composite Particles," National Science Foundation Report (NSF/ENG-86061), 1987.

20. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "A Combined Size Reduction and Liberation Model of Grinding," National Science Foundation Report (NSF/ENG-85090), 1985.

21. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "Estimation of Model Parameters for Liberation and Size Reduction," National Science Foundation Report (NSF/ENG-87051), 1987.

22. Choi, W. Z., Adel, G. T. and Yoon, R.-H., "Liberation Modeling Using Automated Image Analysis," National Science Foundation Report (NSF/ENG-87050), 1988.

23. Adel, G. T., Yoon, R.-H. and Ehrich R. W., "Image Analysis Applications in Mineral Processing," National Science Foundation Report (NSF/ENG-87052), 1988.

24. Choung, J. W., Han, O. H. and Yoon, R.-H., "Preliminary Test Results on Amorphous Graphite," Report prepared for Kyerim Graphite Mine Company, Sangju Kun Kyong Buk, Korea, 7 pp., 1989.

25. Basilio, C. I. and Yoon, R.-H., "Fundamental Studies of Acid-Circuit Collectors for Sulfide Minerals," Final Report to American Cyanamid Company, Stamford, Connecticut, 270 pp., 1989.

26. Yoon, R.-H., "The Virginia Center for Coal and Minerals Processing," First Semi-Annual Report Prepared for the Center for Innovative Technology, Herndon, Virginia, 16 pp., 1989.

27. Yoon, R.-H., "The Virginia Center for Coal and Minerals Processing," First Annual Report and Proposal for Second-Year Funding for the Center for Innovative Technology, Herndon, Virginia, 40 pp., 1989.

28. Yoon, R.-H., Luttrell, G. H., Adel, G. T., and Kutz, K. B., "Report on the First Phase of the Round Robin Testing Procedure," Report prepared for ICF Kaiser Engineers, Inc., Pittsburgh, Pennsylvania, 10 pp., 1989.

29. Adel, G. T., Luttrell, G. H. and Yoon, R.-H., "Liberation Analysis of Pittsburgh No. 8 Seam Coal," ICF Kaiser Engineers, Inc., Pittsburgh, Pennsylvania, 6 pp., 1989.

30. Luttrell, G. H., Adel, G. T., Forrest, R. P. and Yoon, R.-H., "Evaluation of the ISGS Reagent Package in Microbubble Column Flotation," Report prepared for the Illinois State Geological Survey, Champaign, Illinois, 28 pp., 1989.

31. Forrest, R. P., Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Grab-and-Run Testing of a Pittsburgh Seam Coal," Report prepared for Consolidation Coal company, Library, Pennsylvania, 5 pp., 1989.

32. Luttrell, G. H., Mankosa, M. J., Adel, G. T., and Yoon, R.-H., "In-Plant Testing of Microbubble Column Flotation," Report prepared for Shell Mining Company, Naugatuck, West Virginia, 20 pp., 1989.

33. Luttrell, G. H. and Yoon, R.-H., "Evaluation of the EILAT Process by Microbubble Column Flotation," Report prepared for Perfect View, Inc., Raleigh, North Carolina, 17 pp., 1989.

58

34. Yoon, R.-H., Luttrell, G. H., and Adel, G. T., "Review of the DOE Interlaboratory Comparison of Advanced Flotation Processes," Report prepared for the U.S. Department of Energy, Pittsburgh Energy Technology Center, Pittsburgh, Pennsylvania, 10 pp., 1989.

35. Yoon, R.-H., "SEM Studies on Aluminum Samples Containing Gold and Palladium," Report prepared for Recovery Systems, Inc., Salem, Virginia, 7 pp., 1989.

36. Yoon, R.-H., Luttrell, G. H. and Adel, G. T., "Advanced Systems for Producing Superclean Coal," Final Report to the U.S. Department of Energy, Contract No. DE/AD22/86PC91221, 350 pp., 1990.

37. Yoon, R.-H., Adel, G. T. and Luttrell, G. H., "Process Development Unit Testing of Microbubble Flotation," Final Report to the U.S. Department of Energy, Contract No. DE/AC22/86PC91274, 325 pp., 1990.

38. Luttrell, G.H., Mankosa, M.J., Adel, G.T., Yoon, R.-H., "In-Plant Testing of Microbubble Column Flotation," Fifth Quarterly Technical Progress Report; 17 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, January 1991.

39. Luttrell, G.H., Mankosa, M.J., Adel, G.T., Yoon, R.-H., "In-Plant Testing of Microbubble Column Flotation," Sixth Quarterly Technical Progress Report; 26 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, May 1991.

40. Yoon, R.-H., Luttrell, G.H., Adel, G.T., Mankosa, M.J., "In-Plant Testing of Microbubble Column Flotation," Final Report; 327 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, December 1991.

41. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," First Quarterly Technical Progress Report; 20 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, January 1991.

42. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Second Quarterly Technical Progress Report; 29 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, April 1991.

43. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Third Quarterly Technical Progress Report; 51 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, July 1991.

44. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Fourth Quarterly Technical Progress Report; 37 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, December 1991.

45. Basilio, C.I., Yoon, R.-H., "Development of the Chemical and Electrochemical Coal Cleaning Process," Eleventh Quarterly Technical Progress Report; 12 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, January 1991.

46. Basilio, C.I., Yoon, R.-H., "Development of the Chemical and Electrochemical Coal Cleaning Process," Twelfth Quarterly Technical Progress Report; 17 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, April 1991.

47. Basilio, C.I., Yoon, R.-H., "Development of the Chemical and Electrochemical Coal Cleaning Process," Thirteenth Quarterly Technical Progress Report; 10 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, July 1991.

48. Basilio, C.I., Yoon R.-H., "Development of the Chemical and Electrochemical Coal Cleaning Process," Fourteenth Quarterly Technical Progress Report; 13 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, November 1991.

49. Luttrell, G.H., Yoon, R.-H., Ou, Z., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Fifth Quarterly Technical Progress Report; 19 pp. Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, January 1991.

50. Luttrell, G.H., Yoon, R.-H., Lagno, M.L., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Sixth Quarterly Technical Progress Report; Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, 20 pp., March 1991.

51. Luttrell, G.H., Yoon, R.-H., Zachwieja, J.B., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Seventh Quarterly Technical Progress Report; Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, 11 pp., July 1991.

59

52. Luttrell, G.H., Yoon, R.-H., Tao, D.P., Zhang, W., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Eighth Quarterly Technical Progress Report; Submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, 23 pp., December 1991.

53. Kutz, K., Yoon, R.-H., "Time-Resolved Fourier Transform Infrared Spectrometer for In-Situ Coal and Mineral Surface Analysis," Annual Technical Progress Report; Submitted to U.S. Department of Energy, Oak Ridge Operations Office, 3 pp., November 1991.

54. Yoon, R.-H., Adel, G.T., Luttrell, G.H., Claus, R.O., Murphy, K.A. "An Optical Sensor for On-Line Analysis of Phosphate Minerals," (the latter two are in Electrical Engineering), First Quarterly Report; Submitted to Florida Institute of Phosphate Research, 13 pp., October 1991.

55. Yoon, R.-H., Aksoy, B.S., Guzonas, D.A., "Studies of Hydrophobic Interactions in Tar Sand Processing," Progress Report submitted to Syncrude Canada Ltd., 5 pp., December 1991.

56. Adel, G.T., Mankosa, M.J., Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," First Quarterly Technical Progress Report; Submitted to Center for Research on Sulfur in Coal, 8 pp., December 1991.

57. Luttrell, G.H., Yoon, R.-H., "Process Evaluation - Mikkira Deposit Graphite Ore," Final Report submitted to Pittston Coal Company, 44 pp., 1991.

58. Yoon, R.-H., Adel, G.T., Luttrell, G.H., "Engineering Development of Advanced Physical Fine Coal Cleaning Technologies - Froth Flotation," Ninth Quarterly Technical Progress Report; Submitted to ICF Kaiser Engineers, 129 pp., July 1991.

59. Yoon, R.-H., Adel, G.T., Luttrell, G.H., "Engineering Development of Advanced Physical Fine Coal Cleaning Technologies - Froth Flotation," Tenth Quarterly Technical Progress Report; Submitted to ICF Kaiser Engineers, 12 pp., July 1991.

60. Yoon, R.-H., Adel, G.T., Luttrell, G.H., "Engineering Development of Advanced Physical Fine Coal Cleaning Technologies - Froth Flotation," Topical Report for Task 7;; Submitted to ICF Kaiser Engineers, 400 pp., April 1991.

61. Yoon, R.-H., Mankosa, M.J., "Small Column Testwork - Race Fork Coal," Report sumbitted to ICF Kaiser Engineers, 8 pp., January 1991.

62. Yoon, R.-H., Mankosa, M.J., "Small Column Testwork - Lambert Coal," Report submitted to ICF Kaiser Engineers, 6 pp., January 1991.

63. Yoon, R.-H., Rimmer, H.W., "Small Column Testwork - Monterey No. 2 Coal," Report submitted to ICF Kaiser Engineers, April 1991, 12 pp.

64. Yoon, R.-H., Rimmer, H.W., "Small Column Testwork - Kerr-McGee Galatia Coal," Report submitted to ICF Kaiser Engineers, 36 pp., April 1991.

65. Yoon, R.-H., Rimmer, H.W., "Small Column Testwork - Donaldson Mine Coal," Report submitted to ICF Kaiser Engineers, 1 p., May 1991.

66. Yoon, R.-H., Mankosa, M.J., "Small Column Testwork - Thiele Kaolin Company," Report submitted to ICF Kaiser Engineers, 8 pp., May 1991.

67. Yoon, R.-H., Mankosa, M.J., "Small Column Testwork - ANR Coal," Report submitted to ICF Kaiser Engineers, 9 pp., May 1991.

68. Yoon, R.-H., Mielczarski, J.A., Stridh, K., Kim, D.S., Basilio, C.I., "Fundamental Studies of Monothiophosphate- and Thiourea-Based Collectors for Flotation," Quarterly Report submitted to American Cyanamid Company, 26 pp. , January 1991.

69. Yoon, R.-H., Basilio, C.I., Kim, D.S., "Fundamental Studies of Monothiophosphate- and Thiourea-Based Collectors for Flotation," Quarterly Report submitted to American Cyanamid Company, 22 pp., April 1991.

70. Yoon, R.-H., Adel, G.T., Luttrell, G.H., "Automation and In-Plant Testing of Microbubble Column Flotation," CORE Research Project Report, Submitted to Virginia Tech Research Division, 2 pp., May 1991.

71. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Contract DE-AC22-90PC90174 Fourth Quarterly Technical Report, U.S. DOE/PETC, 39pp., January 1992.

72. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Contract DE-AC22-90PC90174 Fifth Quarterly Technical Report, U.S. DOE/PETC, 27pp., January 1992.

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73. Yoon, R.-H., Luttrell, G.H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Grant DE-FG22-89PC89789 Ninth Quarterly Tech. Program Report, U.S. DOE/PETC, 22pp., March 1992.

74. Yoon, R.-H., Luttrell, G.H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Grant DE-FG22-89PC89789 Tenth Quarterly Tech. Program Report, U.S. DOE/PETC, pp. 11, May 1992.

75. Yoon, R.-H., Basilio, C., "Development of the Chemical and Electrochemical Coal Cleaning Process," Contract DE-AC22-87PC79892 Final Report, U.S. DOE/PETC, Report No. DOE/PC/79892-T21, 206pp., May 1992.

76. Yoon, R.-H., Luttrell, G.H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Grant DE-FG22-89PC89789 Eleventh Quarterly Tech. Program Report, U.S. DOE/PETC, 26pp.,July 1992.

77. Yoon, R.-H., Luttrell, G.H., "Development of the Selective Coagulation Process," Contract DE-AC22-90PC90174 Final Report, U.S. DOE/PETC, Report No. DOE/PC/90174-T5, 236pp., July 1992.

78. Yoon, R.-H., Mielczarski, J.A., "Time Resolved Fourier Transform Infrared Spectrometer for In-Situ Coal and Mineral Analysis," Grant DE-FG05-90ER75586 Annual Technical Progress Report, U.S. DOE/PETC, November 1992.

79. Yoon, R.-H. and Luttrell, G.H., "Control of Pyrite Surface Chemistry in Physical Coal Cleaning," Twelfth Quarterly Technical Progress Report, U.S. Department of Energy, Pittsburgh Energy Technology Center, Grant DE-FG22-89PC89789, 20pp., December, 1992.

80. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," First-Third Quarterly Progress Report, U.S. Department of Energy, Pittsburgh Energy Technology Center, Grant DE-AC22-91PC91164, 9pp., December, 1992.

81. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," Fourth Quarterly Progress Report, U.S. Department of Energy, Pittsburgh Energy Technology Center, Grant DE-AC22-91PC91164, 25pp., December, 1992.

82. Adel, G.T., Mankosa, M.K., Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," Second Quarterly Technical Progress Report, submitted to the Center for Research on Sulfur in Coal, March 1992.

83. Guzonas, D.A., Yoon R.-H., "Studies of Hydrophobic Interactions in Tar Sand Processing," Second Technical Progress Report, submitted to Syncrude Canada, LTD., March 1992.

84. Yoon, R.-H., Adel, G.T., Luttrell, G.H., Claus, R.O., Wang, A.B. and Murphy, K.A., "An Optical Sensor for On-line Analysis of Phosphate Minerals," Second Quarterly Report to Florida Institute of Phosphate Research, February, 1992.

85. Yoon, R.-H., Adel, G.T., Luttrell, G.H., Wang, A.B., Murphy, K.A. and Claus, R.O., "An Optical Sensor for On-line Analysis of Phosphate Minerals," Third Quarterly Technical Progress Report to Florida Institute for Phosphate Research, April 1992.

86. Yoon, R.-H., Adel, G.T., Luttrell, G.H., Claus, R.O. and Murphy, K.A., "An Optical Sensor for On-line Analysis of Phosphate Minerals," Fourth Quarterly Technical Progress Report to Florida Institute for Phosphate Research, July, 1992.

87. Adel, G.T., Mankosa, M.J., Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," Third Quarterly Technical Progress Report, submitted to the Center for Research on Sulfur in Coal, June, 1992.

88. Adel, G.T., Mankosa, M.K., Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," Fourth Quarterly Technical Progress Report, submitted to the Center for Research on Sulfur in Coal, August, 1992.

89. Guzonas, D.A., Yoon R.-H., "Studies of Hydrophobic Interactions in Tar Sand Processing," Final Progress Report, submitted to Syncrude Canada, LTD., September 1992.

90. Yoon, R.-H., Basilio, C., Richardson, P.E., "Improving Metallurgical Performance of the Red Dog Concentrator by Control of Chemistry," First Technical Progress Report, submitted to Cominco, LTD., October, 1992.

91. Yoon, R.-H., Basilio, C., and Richardson, P.E., "Studies on Pyrrhotite Depression by Diethylenetriamine," Interim Technical Progress Report, submitted to INCO Metals, LTD., October 1992.

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92. Adel, G.T., Mankosa, M.K., Yoon, R.-H., "Improved Grinding Efficiency Through Media Size Control," Final Progress Report, submitted to the Center for Research on Sulfur in Coal, November 1992.

93. Yoon, R.-H., "Virginia Center for Coal and Mineral Processing," Fourth Annual Report, submitted to Center for Innovation Technology, November 1992.

94. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-90PC90174, 48 pp., January, 1993.

95. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-90PC90174, April, 1993.

96. Yoon, R.-H. and Luttrell, G.H., "Development of the Selective Hydrophobic Coagulation Process," Seventh Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-90PC90174, August, 1993.

97. Yoon, R.-H., Mankosa, M.J. and Luttrell, G.H., "Bench-Scale Testing of the Multi-Gravity Separator in Combination with Microcel," First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-92PC92205, January, 1993.

98. Yoon, R.-H., Mankosa, M.J. and Luttrell, G.H., "Bench-Scale Testing of the Multi-Gravity Separator in Combination with Microcel," Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April, 1993.

99. Yoon, R.-H., Mankosa, M.J. and Luttrell, G.H., "Bench-Scale Testing of the Multi-Gravity Separator in Combination with Microcel," Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-92PC92205, July, 1993.

100. Yoon, R.-H., Phillips, D.I. and Luttrell, G.H., "Bench-Scale Testing of the Multi-Gravity Separator in Combination with Microcel," Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Contract No. DE-AC22-92PC92205, December 1993.

101. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., " Development of Enhanced Sulfur Rejection Processes," First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-PC89789, February, 1993.

102. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., " Development of Enhanced Sulfur Rejection Processes," Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-PC89789, May, 1993.

103. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., " Development of Enhanced Sulfur Rejection Processes," Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-PC89789, August, 1993.

104. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., " Development of Enhanced Sulfur Rejection Processes," Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-PC89789, December, 1993.

105. Yoon, R.-H. and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-92PC92547, 17 pp., February, 1993.

106. Yoon, R.-H. and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-92PC92547, 6 pp., May, 1993.

107. Yoon, R.-H. and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-92PC92547, 14 pp., August, 1993.

108. Yoon, R.-H. and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, Grant No. DE-FG22-92PC92547, 13 pp., December, 1993.

109. Yoon, R.-H., "Time Resolved Fourier Transform Infrared Spectrometer for In-Situ Coal and Mineral Surface Analysis," Final Report, submitted to U.S. DOE/Oak Ridge, 7 pp., December, 1993.

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110. Yoon, R.-H., Basilio, C.I., Richardson, P.E. and Luttrell, G.H., Second Quarterly Progress Report, submitted to Cominco Ltd., 198 pp., March, 1993.

111. Adel, G.T., Schoenherr, J.I., and Yoon, R.-H., "Recovery of Phosphate from Coarse Reject Material Phase II: Batch Flotation Testing," Final Report, submitted to Texasgulf, Inc., 142 pp., April, 1993.

112. Yoon, R.-H., Adel, G.T., Luttrell, G.H., Claus, R.O., Murphy, K.A., "An Optical Sensor for On-Line Analysis of Phosphate Minerals," Final Project Report, submitted to Florida Institute of Phosphate Research (FIPR), 33 pp., April 26, 1993.

113. Basilio, C.I., Kim, D.-S. and Yoon, R.-H., "Modified Thiol Collector Adsorption on Sulfide Minerals," First Quarterly Progress Report, submitted to Cytec Industries, 20 pp., April, 1993.

114. Yoon, R.-H., Adel, G.T. and Luttrell, G.H., "Characterization of Coal for Improved Pyrite Rejection," Project Report for the Virginia Tech CORE Research Program, 2pp., April 5, 1993.

115. Yoon, R.-H., Richardson, P.E., Basilio, C.I. and Finkelstein, N.P., Third Quarterly Progress Report, submitted to Cominco Ltd., 13 pp., June, 1993.

116. Basilio, C.I., Kim, D.-S. and Yoon, R.-H., "Studies of the Pyrrhotite Depression Mechanism with Diethylenetriamine," Final Report, submitted to INCO Ltd., 27 pp., June, 1993.

117. Basilio, C.I., Kim, D.-S. and Yoon, R.-H., "Modified Thiol Collector Adsorption on Sulfide Minerals," Second Quarterly Progress Report, submitted to Cytec Industries, 23 pp., July, 1993.

118. Finkelstein, N.P., Palsson, B. and Yoon, R.-H., "Solution Thermodynamics of the Red Dog Concentrator," Topical Report, submitted to Cominco Ltd., 47 pp., August, 1993.

119. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, 5 pp. , October, 1993.

120. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, 9 pp., November, 1993.

121. Yoon, R.-H., Richardson, P.E., Basilio, C.I. and Finkelstein, N.P., Quarterly Progress Report, submitted to Cominco Ltd., 36 pp., December, 1993.

122. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, 13 pp., December, 1993.

123. Yoon, R.-H., Luttrell, G.H., Adel, G.T., and Vencill, M.T., "Engineering Development of Advanced Fine Coal Cleaning for Premium Fuel Applications," Technical Progress Report, submitted to AMAX R&D, 24 pp., December 20, 1993.

124. Yoon, R.-H., Phillips, D.I. and Luttrell, G.H., "Bench-Scale Testing of the Multigravity Separator in Combination with MicrocelTM," Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, March 1994.

125. Yoon, R.-H., and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, March 1994.

126. Yoon, R.-H., Phillips, D.I. and Luttrell, G.H., "Bench-Scale Testing of the Multigravity Separator in Combination with MicrocelTM," Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, May 1994.

127. Yoon, R.-H., and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, May 1994.

128. Richardson, P.E., Pazhianur, R., and Yoon, R.-H., “Cathodic Protection of Ball Mills to Minimize Wear and Corrosion,” semiannual Technical Progress Report, submitted to University of Utah Comminution Center, May 1994.

129. Richardson. P.E. and Yoon, R.-H., “To Determine How the Source of Ore Pyrite Affects its Acid Generating Potential,” semiannual Technical Progress Report, submitted to University of Nevada-Reno Center for Mineral Industry Waste Treatment and Recovery Center, May 1994.

130. Yoon, R.-H., Phillips, D.I. and Luttrell, G.H., "Bench-Scale Testing of the Multigravity Separator in Combination with MicrocelTM," Final Technical Progress Report, submitted to U.S. DOE/PETC, August 1994.

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131. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., "Development of Enhanced Sulfur Rejection Processes," Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, August 1994.

132. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., "Development of Enhanced Sulfur Rejection Processes," Seventh Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, September 1994.

133. Yoon, R.-H., and Richardson, P.E., "Controlling Incipient Oxidation of Pyrite for Improved Rejection," Seventh Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, September 1994.

134. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., "Development of Enhanced Sulfur Rejection Processes," Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, October 1994.

135. Richardson, P.E., Pazhianur, R., and Yoon, R.-H., “Cathodic Protection of Ball Mills to Minimize Wear and Corrosion,” semiannual Technical Progress Report, submitted to University of Utah Comminution Center, November 1994.

136. Yoon, R.-H., Luttrell, G.H., Adel, G.T. and Richardson, P.E., “Development of Enhanced Sulfur Rejection Processes,” draft Final Technical Progress Report, submitted to U.S. DOE/PETC, December 1994.

137. Richardson, P.E. and Yoon, R.-H., “To Determine How the Source of Ore Pyrite Affects its Acid Generating Potential,” semiannual Technical Progress Report, submitted to University of Nevada-Reno Center for Mineral Industry Waste Treatment and Recovery Center, December 1994.

138. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, January 1994.

139. Luttrell, G.H., Vencill, M.T. and Yoon, R.-H., “Engineering Development of Advanced Physical Fine Coal Cleaning for Premium Fuel Applications,” First Technical Progress Report, submitted to AMAX R&D Center, January 1994.

140. Luttrell, G.H., Vencill, M.T. and Yoon, R.-H., “Engineering Development of Advanced Physical Fine Coal Cleaning for Premium Fuel Applications,” Second Technical Progress Report, submitted to AMAX R&D Center, February 1994.

141. Luttrell, G.H., Vencill, M.T. and Yoon, R.-H., “Engineering Development of Advanced Physical Fine Coal Cleaning for Premium Fuel Applications,” Third Technical Progress Report, submitted to AMAX R&D Center, March 1994.

142. Yoon, R.-H., Richardson, P.E. and Finkelstein, N.P., "Measurement of Redox Potential and Dissolved Oxygen in the Red Dog Concentrator," Topical Report, submitted to Cominco Ltd., March 1994.

143. Basilio, C.I., and Yoon, R.-H., "Modified Thiol Collector Adsorption on Sulfide Minerals," Technical Progress Report, submitted to Cytec Industries, March 1994.

144. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, April 1994.

145. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, May 1994.

146. Yoon, R.-H., Basilio, C.I., Richardson, P.E., Finkelstein, N.P. and Luttrell, G.H., Summary Report, submitted to Cominco Ltd., May 1994.

147. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, June 1994.

148. Yoon, R.-H., Basilio, C.I. and Richardson, P.E., Eighth Quarterly Progress Report, submitted to Cominco Ltd., July, 1994.

149. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, July 1994.

150. Luttrell, G.H., Yoon, R.-H., Novak, J.T. and Dove, D., "Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit," Technical Progress Report, submitted to EPRI, October 1994.

151. Luttrell, G.H., Adel, G.T. and Yoon, R.-H., “Engineering Development of Advanced Physical Fine Coal Cleaning Technologies-Froth Flotation, Final Report of OCTAD Test Program,” submitted to ICF Kaiser Engineers, December 1994.

64

152. Yoon, R.-H. and Richardson, P.E., “Controlling Incipient Oxidation of Pyrite for Improved Rejection,” Eighth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, January 1995.

153. Yoon, R.-H. and Richardson, P.E., “Controlling Incipient Oxidation of Pyrite for Improved Rejection,” Ninth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1995.

154. Yoon, R.-H. and Richardson, P.E., “Controlling Incipient Oxidation of Pyrite for Improved Rejection,” Tenth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, August 1995.

155. Yoon, R.-H. and Richardson, P.E., “Controlling Incipient Oxidation of Pyrite for Improved Rejection,” Final Technical Progress Report, submitted to U.S. DOE/PETC, December 1995.

156. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, June 1995.

157. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, June 1995.

158. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, November 1995.

159. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, November 1995.

160. Richardson, P.E., Yoon, R.-H. and Pazhianur, R., “Cathodic Protection of Ball Mills to Minimize Wear and Corrosion,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Utah Comminution Center, April 1995.

161. Richardson, P.E., Yoon, R.-H. and Pazhianur, R., “Cathodic Protection of Ball Mills to Minimize Wear and Corrosion,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Utah Comminution Center, October 1995.

162. Richardson, P.E., Yoon, R.-H. and Mendiratta, N., “Subaqueous Disposal of Mill Tailings,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Nevada Reno, April 1995.

163. Richardson, P.E., Yoon, R.-H. and Mendiratta, N., “Subaqueous Disposal of Mill Tailings,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Nevada Reno, October 1995.

164. Luttrell, G.H., Venkatraman, P., Phillips, D.I., and Yoon, R.-H., “Bench-Scale Testing of the Multi-Gravity Separator in Combination with Microcel,” Final Technical Report, submitted to U.S. Department of Energy, Pittsburgh, Energy Technology Center, Contract No. DE-AC22-92PC92205, March 1995.

165. Yoon, R.-H., Luttrell, G.H., Adel, G.T., and Richardson, P.E., “Development of Enhanced Sulfur Rejection Processes,” Final Technical Progress Report, submitted to U.S. Department of Energy, Pittsburgh Energy Technology Center, Grant No. DE-AC22-PC89789, March 1995.

166. Yoon, R.-H., Tao, D., Chen, Z. and Richardson, P.E., “Activation of Pyrite with Cu(II): Effects of Oxidation Calcium Ion, Ferric Ion, Cyanide and Amyl Xanthate,” Topical Report, submitted to Cominco Ltd., April 1995.

167. Yoon, R.-H., Tao, D., Chen, Z. and Richardson, P.E., “Activation of Pyrite with Cu(II): Effects of Oxidation Calcium Ion, Ferric Ion, Cyanide and Amyl Xanthate,” Final Report, submitted to Cominco Ltd., July 1995.

168. Yoon, R.-H., Basilio, C.I. and Luttrell, G.H., “Subtask 3.3 - Dewatering Studies,” First Quarter Technical Progress Report, submitted to Cyprus-Amax R&D Center, August 1995.

169. Yoon, R.-H., Basilio, C.I., Rabinovich, Y.I. and Luttrell, G.H., “Subtask 3.3 - Dewatering Studies,” Second Quarterly Technical Progress Report, submitted to Cyprus-Amax R&D Center, November 1995.

170. Luttrell, G.H., Yoon, R.-H., and Adel, G.T., “Development of a Process Engineering Package for Column Flotation,” Final Report for first year funding, submitted to Control International, Inc., March 1995.

171. Yoon, R.-H., Luttrell, G.H., and Adel, G.T., “A Novel Flotation Scheme for Improved Pyrite Rejection in Coal,” Report to University Core Research Program, May 1995.

172. Yoon, R.-H. and Basilio, C.I., “Studies on New Flotation Reagents: Polymeric Depressants for Sulfides and Hydroxamates for Kaolin Flotation,” Technical Progress Report, submitted to CYTEC Industries, December 1994.

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173. Yoon, R.-H., Basilio, C.I. and Rabinovich, Y.I., “Studies of the Mechanism of Rock Mineral Flotation at Clarabelle Mill,” Final Report for Phase I, submitted to INCO Ltd., December 1995.

174. McPherson, M.J., Luttrell, G.H., and Yoon, R.-H., “Development of Enhanced Methods for Coalbed Methane Extraction,” Project Status Report for the Period 5/1/94-12/31/94, submitted to Virginia Center for Innovative Technology, Herndon, Virginia, January 1995.

175. Luttrell, G.H., Yoon, R.-H., Novak, J.T., and Dove, D., “Removal of Trace Elements from Coal Using a Multiple-Property Processing Circuit,” Final Technical Report, submitted to Electric Power Research Institute (EPRI), EPRI Contract No. RP8022-07, September 1995.

176. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Second Quarter, submitted to Entech Global, Inc., Golden, Colorado, November 1995.

177. Yoon, R.-H. and Phillips, D.I., “Subtask 3.2 Near-Term Testing 30 inch Test Column at the Lady Dunn Preparation Plant,” First Quarterly Technical Progress Report, submitted to AMAX Research and Development Center, July 1996.

178. Yoon, R.-H. and Phillips, D.I., “Subtask 3.2 Near-Term Testing 30 inch Test Column at the Lady Dunn Preparation Plant,” Second Quarterly Technical Progress Report, submitted to AMAX Research and Development Center, October 1996.

179. Yoon, R.-H. and Basilio, C.I., “Studies on New Flotation Reagents: Polymeric Depressants for Sulfides and Hydroxamates for Kaolin Flotation,” Technical Progress Report, submitted to CYTEC Industries, April 1996.

180. Yoon, R.-H., Basilio, C.I. and Rabinovich, Y.I., “Studies of the Mechanism of Rock Mineral Flotation at Clarabelle Mill,” Final Report for Phase I, submitted to INCO Ltd., May 1996.

181. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Third Quarter, submitted to Entech Global, Inc., Golden, Colorado, January 1996.

182. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Fourth Quarter, submitted to Entech Global, Inc., Golden, Colorado, April 1996.

183. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Fifth Quarter, submitted to Entech Global, Inc., Golden, Colorado, July 1996.

184. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Sixth Quarter, submitted to Entech Global, Inc., Golden, Colorado, October 1996.

185. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, January 1996.

186. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1996.

187. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, July 1996.

188. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, October 1996.

189. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” First Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1996.

190. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Second Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, May 1996.

191. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Third Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, July 1996.

192. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Fourth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, October 1996.

193. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1996.

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194. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, July 1996.

195. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Seventh Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, October 1996.

196. Richardson, P.E., Yoon, R.-H. and Pazhianur, R., “Cathodic Protection of Ball Mills to Minimize Wear and Corrosion,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Utah Comminution Center, May 1996.

197. Richardson, P.E., Yoon, R.-H. and Mendiratta, N., “Subaqueous Disposal of Mill Tailings,” Semiannual Technical Progress Report, submitted to U.S.B.M./Univ. of Nevada Reno, December 1996.

198. Yoon, R.-H. and Basilio, C.I., “Studies on New Flotation Reagents: Polymeric Depressants for Sulfides and Hydroxamates for Kaolin Flotation,” Technical Progress Report, submitted to CYTEC Industries, April 1996.

199. Yoon, R.-H., Basilio, C.I. and Rabinovich, Y.I., “Studies of the Mechanism of Rock Mineral Flotation at Clarabelle Mill,” Final Report for Phase I, submitted to INCO Ltd., May 1996.

200. Yoon, R.-H., Basilio, C.I., Rabinovich, Y.I. and Luttrell, G.H., “Subtask 3.3 - Dewatering Studies,” Seventh Quarterly Technical Progress Report, submitted to Cyprus-Amax R&D Center, January 1997.

201. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Seventh Quarter, submitted to Entech Global, Inc., Golden, Colorado, January 1997.

202. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, January 1997.

203. Yoon, R.-H., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1997.

204. Luttrell, G.H., Adel, G.T. and Yoon, R.H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Seventh Quarterly Technical Progress Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, 9 pp., June, 1997.

205. Yoon, R.-H., Luttrell, G.H., and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Eighth Quarterly Technical Progress Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 31 pp., September 1997.

206. Yoon, R.-H., Yan, E.S., Luttrell, G.H., and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Ninth Quarterly Technical Progress Report, U.S. Department of Energy, Federal Energy Technology Center, Contract No. DE-AC22-95PC95151, 26 pp., December 1997.

207. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Fifth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, January 1997.

208. Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Sixth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, April 1997.

209. Yoon, R.-H. and Phillips, D.I., “Subtask 3.2 Near-Term Testing 30 inch Test Column at the Lady Dunn Preparation Plant,” Third Quarterly Technical Progress Report, submitted to AMAX Research and Development Center, January 1997.

210. Yoon, R.-H. and Phillips, D.I., “Subtask 3.2 Near-Term Testing 30 inch Test Column at the Lady Dunn Preparation Plant,” Topical Technical Progress Report, submitted to AMAX Research and Development Center, April 1997.

211. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Eighth Quarterly Technical Progress Report, submitted to U.S. DOE/PETC, January 1997.

212. Yoon, R.-H., “Appalachian Clean Coal Technology Consortium,” Final Technical Progress Report, submitted to U.S. DOE/PETC, April 1997.

213. Yoon, R.-H., Basilio, C.I., and Luttrell, G.H., “Evaluation of Column Flotation for Production of Premium Coal Fuels: Subtask 3.3 - Dewatering Studies,” Technical Progress Report, Seventh Quarter, submitted to Entech Global, Inc., Golden, Colorado, January 1997.

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214. Luttrell, G.H., Adel, G.T. and Yoon, R.H., 1998. “Precombustion Removal of Hazardous Air Pollutant Precursors,” Draft Final Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, 2092 pp., July 31, 1997.

215. Yoon, R.-H., Yan, E.S., Luttrell, G.H., and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Tenth Quarterly Technical Progress Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 21 pp., January-March 1998.

216. Yoon, R.-H., Yan, E.S., Luttrell, G.H., and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Eleventh Quarterly Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 22 pp., April 1-June 30, 1998.

217. Yoon, R.-H., Yan, E.S., Luttrell, G.H., and Adel, G.T., “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Twelfth Quarterly Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 27 pp, July 1-September 30, 1998.

218. Yoon, R.-H., Luttrell, G.H., and Adel, G.T., Walters, A. “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Thirteenth Quarterly Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 22 pp, October 1-December 31, 1998.

219. Yoon, R.-H., Luttrell, G.H., and Adel, G.T., Walters, A. “POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Fourteenth Quarterly Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 4 pp., January 1-March 31, 1999.

220. Yoon, R. -H., Luttrell, G.H., and Adel, G.T., Walters, A. D., " POC-Scale Testing of a Dry Triboelectrostatic Separator for fine Coal Cleaning," Fifteenth Quarterly Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 15 pp., April 1-June 30, 1999.

221. Yoon, R.-H., Luttrell, G.H., and Walters, A. D., "POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning," Eighteenth Quarterly Technical Progress Report, United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 9 pp., January 1 - March 31, 2000.

222. Yoon, R.-H., Luttrell, G.H., and Adel, G.T., "Advanced Dewatering Systems Development," Management Plan, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 4 pp., January 1-March 31, 1999.

223. Yoon, R. -H., Luttrell, G.H., Walters, A. D., " Advanced Dewatering Systems Development," First Quarterly Status and Cost Management Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE- AC26-98FT40153, 4 pp., May 1999.

224. Yoon, R. -H., Luttrell, G.H., and Walters, A. D.,” Advanced Dewatering Systems Development,” Second Quarterly Status and Cost Management Report, United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153 , 4pp, April 1- June 30, 1999.

225. Yoon, R. -H., Luttrell, G.H., and Walters, A. D.,” Advanced Dewatering Systems Development,” Third Quarterly Status and Cost Management Report, United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153 , 4p., July 1,- September 30, 1999.

226. Yoon, R. -H., Luttrell, G.H., and Walters, A. D.,” Advanced Dewatering Systems Development,” Fourth Quarterly Status and Cost Management Report, United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153 , 4pp., October 1,- December 31, 1999.

227. Yoon, R. -H., Luttrell, G.H., and Walters, A. D.,” Advanced Dewatering Systems Development,” Fifth Quarterly Status and Cost Management Report, United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153 , 4pp, January 1,- March 31, 2000.

228. Yoon, R. -H., Yildirim, I., 1999. "Surface Characterization of Talc," Semi-Annual Report, submitted to Luzenac America, Englewood, Colorado, April 15, 1999.

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229. Yoon, R.-H., Pazhianur, R., "Study of Synergistic Effects of Surfactants," Final Report, Cytec Industries, Stamford, Connecticut, pp. 45., May 1999.

230. Mendiratta, N.K., Yoon, R.-H., Richardson, P., "Subaqueous Disposal of Mill Tailings," Report to U.S. Bureau of Mines Mineral Industry Waste Treatment and Recovery Center, Mackay School of Mines, University of Nevada, Reno, 1999.

231. Mendiratta, N.K., Yoon, R.-H., Richardson, P., "To Determine How the Source of Ore Affects Its Pyrite Source Potential/Acid Generating Potential," Report to U.S. Bureau of Mines Mineral Industry Waste Treatment and Recovery Center, Mackay School of Mines, University of Nevada, Reno, 1999.

232. Yoon, R.H., Luttrell, G.H., and Walters, A.D., “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Twentieth Quarterly Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 22pp., July 1-September 30, 2000.

233. Yoon, R.H., Luttrell, G.H., and Walters, AD, “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Twenty First Quarterly Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 11pp., October 1-December 31, 2000.

234. Yoon, R.H., Luttrell, G.H., and Walters, AD, “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Twenty Second Quarterly Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 11pp., January 1-March 31, 2000.

235. Yoon, R.H., Luttrell, G.H., Yan E. S. and Walters, AD, “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Draft Final Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 238 pp., September 27, 1995 – April 30, 2001.

236. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development,” Final Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC 26-98FT40153, 182 pp., December 1, 1998 – July 14, 2000.

237. Luttrell, G.H., Adel, G.T., and Yoon, R.-H., “Precombustion Removal of Hazardous Air Pollutant Precursors,” Final Report, Federal Energy Technology Center (FETC), United States Department of Energy (DOE), Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95154, 163 pp., October 2, 2000.

238. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 1, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 23 pp., April 1- June 30, 2000.

239. Yoon, R.-H. and Ismael Yildirim, “Surface Characterization of Talc,” Luzenac America, Final Report for the First Year Funding, 43 pp., May 10, 2000.

240. Rajesh Phazinaur and Roe-Hoan Yoon, “Effects of Co-Surfactants on the Role of Xanthate in Sulfide Flotation,” submitted to Cytec Industries, 31 pp., February 28, 2000.

241. Yoon, R.-H. and Richard Gandour, “Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel,” Midterm Report to POSCO, Korea, 34 pp., November 21, 2000.

242. Roe-Hoan Yoon, Rich Gandour, Min Wang, Neeraj Mediratta, “Report of the Results Obtained with Phosphated Cold-Rolled Steel Plates,” 2nd Midterm report submitted to Posco, 25 pp., November 18, 2000.

243. Roe-Hoan Yoon and Richard Gandour, “Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel,” Final Report for the Work Conducted During the First Year November 1, 1999-October 31, 2,000, submitted to POSCO, Korea, 52 pp., January 26, 2001.

244. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 2, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 16 pp., July 1- September 30, 2001.

245. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 3, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 9 pp., October 1- December 31, 2001.

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246. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 4, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 12 pp., January 1- March 31, 2002.

247. Yoon, R.H., Luttrell, G.H., Yan E. S. and Walters, AD, “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Final Technical Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 238 pp., March 2002.

248. Yoon, R.-H., Luttrell, G.H., Yan E. S. and Walters, AD, “ POC-Scale Testing of a Dry Triboelectrostatic Separator for Fine Coal Cleaning,” Final Technical Report, U.S. Department of Energy, Federal Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-AC22-95PC95151, 238 pp., September 27, 1995 – April 30, 2001. Submitted July 23 2002.

249. Yoon, R.-H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 5, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 16 pp., April 1- June 30, 2002.

250. Yoon, R.-H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 6 U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 15 pp., July 1- September 30, 2002.

251. Yoon, R.-H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 7, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 18 pp., October 1- December 31, 2002.

252. Yoon, R.-H., “Establishment of the Center for Advanced Separation Technologies,” Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 64 pp., September 17, 2001- September 16, 2002.

253. Yoon, R.-H. and Luttrell, G.H., “Improving Coarse Particle Flotation,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 6 pp., May 15, 2002- October 31, 2002.

254. Yoon, R.-H., “Modeling of Flotation From First Principles,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 7 pp., May 15, 2002- October 31, 2002.

255. Yoon, R.-H., “Studies of Froth Stability and Model Development,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 5 pp., May 15, 2002- October 31, 2002.

256. Ducker, W. and Yoon, R.-H., “Direct Measurement of Forces in Flotation Systems,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 5 pp., May 15, 2002- October 31, 2002.

257. Luttrell, G.H. and Yoon, R.-H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 6 pp, May 15, 2002- October 31, 2002.

258. Yoon, R.-H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report No. 3, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 14 pp. (including attachments), April 1 – June 30, 2002.

259. Yoon, R.-H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report No. 4, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 10 pp. (including attachments), July 1 – September 30, 2002.

260. Yoon, R.-H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report No. 5, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 3 pp. (including attachments), October 1 – December 30, 2002.

261. Yoon, R.-H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 1, U.S. Department of Energy, National Energy

70

Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41607, 15 pp. (including attachments), October 1 – December 31, 2002.

262. Yoon, R.-H. and Gandour, R., “Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel,” Final Report (Year 2), POSCO, Korea, 101 pp., September 18, 2002.

263. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 8, 15 pp., January 1- March 31, 2003.

264. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report No. 7, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-FC26-01NT41091, 7 pp. (including attachments), April 1 – June 30, 2003.

265. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 9, 23 pp., April 1- June 30, 2003.

266. Yoon, R.H. and Luttrell, G.H., “Improving Coarse Particle Flotation,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Sub-award under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, Report No. 3, 6 pp., October 1, 2002 – September 30, 2003.

267. Luttrell, G.H., and Yoon, R.-H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Sub-award under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, Report No. 3, 6 pp., October 1, 2002 – September 30, 2003.

268. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, Report No. 1, 5 pp., March 1, 2003 – September 30, 2003.

269. Yoon, R.H., Luttrell, G.H., Honaker, R.Q., and Parekh, B.K., “Development of Novel Ultrafine Sizing Methods,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, Report No. 1, 7 pp., April 1, 2003 – September 30, 2003.

270. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Quarterly Project Status Report No. 3, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Contract No. DE-FC26-02NT41607, 10 pp. (including attachments), April 1 – June 30, 2003.

271. Yoon, R.-H., Gandour, R., Zhang, J., and Wang, J. “Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel,” Midterm Report for the Third-Year Funding, submitted to Dr. Hyung-Joon Kim, Senior Researcher, Surface Treatment Research Group, Technical Research Laboratories, POSCO, Korea, October 30, 2003.

272. Yoon, R.-H., and Rimmer, H., “Center for Advanced Separation Technologies,” Annual Report submitted to Virginia Tech, April, 2004.

273. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 11, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., April 1 – June 30, 2004.

274. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 12, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp.,July 1 – September 30, 2004.

275. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 13, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., October 1 – December 31, 2004.

71

276. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 13, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 16 pp., April 1- June 30, 2004.

277. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 14 U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 15 pp., July 1- September 30, 2004.

278. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 15, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 18 pp., October 1- December 31, 2004.

279. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 98 pp., October 1, 2003 - September 30, 2004.

280. Yoon, R.H. and Luttrell, G.H., “Improving Coarse Particle Flotation,” Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 6 pp, October 1, 2003- September 30, 2004.

281. Yoon, R.H., “Modeling of Flotation From First Principles,” Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 21 pp, October 1, 2003- September 30, 2004.

282. Ducker, W. and Yoon, R.H., “Direct Measurement of Forces in Flotation Systems,” Semi-Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 6 pp, October 1, 2003- September 30, 2004.

283. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Annual Technical Progress Report No. 2. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 7 pp., October 1, 2003- September 30, 2004.

284. Luttrell, G.H. and Yoon, R.H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Annual Technical Progress Report No. 3. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 8 pp., October 1, 2003- September 30, 2004.

285. Luttrell, G.H and .Yoon, R.H. “Development and Testing of a Horizontal Pressure Belt Filter,” Semi-Annual Technical Progress Report No. 1. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp, April 1, 2004- September 30, 2004.

286. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 1 pp., April 1 – June 30, 2004.

287. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 1 pp., July 1 – September 30, 2004.

288. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 1 pp., October 1 – December 30, 2004.

289. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,”Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 143 pp, April 1, 2004 - September 30, 2004.

290. Yoon, R.H., Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26--02NT41607, 1 pp., April 1 – June 30, 2004.

291. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy

72

Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26--02NT41607, 1 pp., July 1 – September 30, 2004.

292. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26--02NT41607, 1 pp., October 1 – December 30, 2004.

293. Yoon, R.-H., Gandour, R., Zhang, J., and Wang, J., “Development of Environmentally Friendly Non-Chrome Conversion Coatings for Cold-Rolled Steel,” by Roe-Hoan Yoon, Richard Gandour, Jinming hang, and Jialin Wang, submitted to Pohang Iron and Steel Company, Korea, Final Report for the Third-Year Funding, pp. 107, June 30, 2004.




297. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 98 pp., October 1, 2003 - September 30, 2004.

298. Yoon, R.H. and Luttrell, G.H., “Improving Coarse Particle Flotation,” Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 6 pp, October 1, 2003- September 30, 2004.

299. Yoon, R.H., “Modeling of Flotation From First Principles,” Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 21 pp, October 1, 2003- September 30, 2004.

300. Luttrell, G.H. and Yoon, R.H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Annual Technical Progress Report No. 3. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 8 pp., October 1, 2003- September 30, 2004.




304. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 11, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., April 1 – June 30, 2004.

305. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 12, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., July 1 – September 30, 2004.

73

306. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 13, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., October 1 – December 31, 2004.

307. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 1 pp., January 1 – March 31, 2005.

308. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 14, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., January 1 – March 31, 2005.

309. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report No. 14, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., January 1 – March 31, 2005.

310. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26--02NT41607, 1 pp., January 1 – March 31, 2005.




314. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report No. 20, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 10 pp., January 1- March 31, 2006.

315. Yoon, R.H.,“Establishment of the Center for Advanced Separation Technologies,” Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 23 pp., October 1, 2004- September 30, 2005.

316. Luttrell, G.H. and Yoon, R.H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Annual Technical Progress Report No. 4. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-01NT41091, 7 pp, October 1, 2004- September 30, 2005.




320. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy

74

Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., April 1 – June 30, 2005.

321. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp.,July 1 – September 30, 2005.

322. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., October 1 – December 31, 2005.

323. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 306 pp, April 1, 2005 - September 30, 2005.

324. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 405 pp, October 1, 2005- March 31.

325. Luttrell, G.H and .Yoon, R.H. “Development and Testing of a Horizontal Pressure Belt Filter,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 405 pp, April 1, 2005- September 30, 2005.

326. Yoon, R.H. “Studies of Froth Stability and Model Development,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 7 pp., April 1, 2005- September 30, 2005.

327. Yoon, R.H. “Direct Measurement of Forces in Flotation” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., April 1, 2005- September 30, 2005.

328. Yoon, R.H and Luttrell, G.H. “Development of Novel Ultrafine Sizing Methods” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., April 1, 2005- September 30, 2005.

329. Yoon, R.H. “A Comprehensive Study of Froth Behavior,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 17 pp., April 1, 2005- September 30, 2005.

330. Luttrell, G.H and .Yoon, R.H. “Improvements in Screen Bowl Centrifuge Performance,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., April 1, 2005- September 30, 2005.

331. Luttrell, G.H. and Yoon, R.H., “Development and Testing of a Horizontal Pressure Belt Filter,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 5, 9 pp., April 1, 2005 – September 30, 2005.

332. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., January 1 – March 31, 2006.

333. Yoon, R.H., “Establishment of the Center for Advanced Separation Technologies,” Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 1 pp., January 1 – March 31, 2006.

334. Luttrell, G.H and .Yoon, R.H. “Development and Testing of a Horizontal Pressure Belt Filter,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., October 1, 2005- March 31, 2006.

75

335. Yoon, R.H. “Studies of Froth Stability and Model Development,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., October 1, 2005- March 31, 2006.

336. Yoon, R.H. “Direct Measurement of Forces in Flotation,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 7 pp., October 1, 2005- March 31, 2006.

337. Yoon, R.H and Luttrell, G.H. “Development of Novel Ultrafine Sizing Methods,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp., October 1, 2005- March 31, 2006.

338. Yoon, R.H. “A Comprehensive Study of Froth Behavior,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 5 pp., October 1, 2005- March 31, 2006.

339. Luttrell, G.H and Yoon, R.H. “Improvements in Screen Bowl Centrifuge Performance,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 5 pp., October 1, 2005- March 31, 2006.

340. Luttrell, G.H and Yoon, R.H. “Engineering Development of a Fine Particle Heavy Medium Separator,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, October 1, 2005- March 31, 2006.

341. Luttrell, G.H and Yoon, R.H. ”Improved Control and Destruction of Residual Froth,” Semi-Annual Technical Progress Report. Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 6 pp, October 1, 2005- March 31, 2006.

342. Yoon, R.H and Luttrell, G.H. “Development of a Turbulent Flotation Model and a Computer Simulator,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 8 pp, October 1, 2005- March 31, 2006.

343. Yoon, R.H. “Measurement of Surface Forces Between Hydrophobic Surfaces,” Semi-Annual Technical Progress Report Sub-project issued under DOE/NETL Cooperative Agreement Award No. DE-FC26-02NT41607, 10 pp., October 1, 2005- March 31, 2006.

344. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 21, 7 pp., April 1 – June 30, 2006.

345. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., April 1 – June 30, 2006.

346. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 22, 11 pp., July 1 – September 30, 2006.

347. Yoon, R.H., “Continuation of Crosscutting Technology at CAST,” Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-05NT42457, 20 pp., October 1, 2005- September 30, 2006.

348. Yoon, R.H.,“Establishment of the Center for Advanced Separation Technologies,” Final Technical Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-01NT41091, 485 pp., September 17, 2001 - September 30, 2006.

349. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., July 1 – September 30, 2006.

350. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 23, 3 pp, October 1 – December 31, 2006.

76

351. Luttrell, G.H., and Yoon, R.-H., “Evaluation of Coal Cleaning Efficiency Using Transponder-Based Density Tracers,” Final Technical Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, 33 pp., December 1, 2006.

352. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Final Technical Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, 22 pp., December 1, 2006.

353. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, October 1 – December 31, 2006.

354. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, January 1 – March 31, 2007.

355. Yoon, R.H., Luttrell, G.H., Honaker, R.Q., and Parekh, B.K., “Development of Novel Ultrafine Sizing Methods,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 7, 6 pp., April 1, 2006 – September 30, 2007.

356. Yoon, R.-H., “A Comprehensive Study of Froth Behavior,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, October 1, 2006 – September 30, 2007.

357. Luttrell, G.H. and Yoon, R.H., “Development and Testing of a Horizontal Pressure Belt Filter,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 6, October 1, 2005 – March 31, 2006.

358. Yoon, R.-H. and Luttrell, G.H., “Development of a Turbulent Flotation Model and a Computer Simulator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 1, October 1, 2005 – March 31, 2006.

359. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 242 pp., April 1, 2005 - September 30, 2006.

360. Yoon, R.-H., “Measurement of Surface Forces Between Hydrophobic Surfaces,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, April 1, 2006 – September 30, 2006.

361. Yoon, R.-H. and Luttrell, G.H., “Development of a Turbulent Flotation Model and a Computer Simulator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, April 1, 2006 – September 30, 2006.

362. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 779 pp., October 1, 2006- March 31, 2007.

363. Yoon, R.-H., “Measurement of Surface Forces Between Hydrophobic Surfaces,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, October 1, 2006 – March 31, 2007.

77

364. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, April 1 – June 30, 2007.

365. Luttrell, G.H. and Yoon, R.H., “Development and Testing of a Horizontal Pressure Belt Filter,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 7, April 1, 2006 – September 30, 2007.

366. Luttrell, G.H. and Yoon, R.H., “Engineering Development of a Fine Particle Heavy Medium Separator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 1, April 1, 2006 – September 30, 2007.

367. Luttrell, G.H. and Yoon, R.H., “Improvements in Screen-Bowl Centrifuge Performance,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 4, April 1, 2006 – September 30, 2007.

368. Yoon, R.H., “Measurement of Surface Forces Between Hydrophobic Surfaces” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 4, April 1, 2007 – September 30, 2007.

369. Yoon, R.-H., “Measurement of Surface Forces Between Hydrophobic Surfaces,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, Report No. 1, October 1, 2006 – September 30, 2007.

370. Luttrell, G.H. and Yoon, R.H., “Improved Control and Destruction of Residual Flotation Froths,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, April 1, 2006 – September 30, 2007.

371. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, July 1 – September 30, 2007.

372. Yoon, R.-H. and Luttrell, G.H., “Development of a Turbulent Flotation Model and a Computer Simulator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 3, 7 pp., October 1, 2006 – March 31, 2007.

373. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 24, 13 pp., January 1 – March 30, 2007.

374. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 25, April 1 – June 30, 2007.

375. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 26, July 1 – September 30, 2007.

376. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 27, October 1 – December 31, 2007.

377. Yoon, R.-H., Luttrell, G.H., Vlachos, P. and Teleonis, P., “Development of a Turbulent Flotation Model and a Computer Simulator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, Report No. 1, 17 pp., October 1, 2006 – September 30, 2007.

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379. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 290 pp., April 1, 2007- September 30, 2007.

380. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, October 1 – December 31, 2007.

381. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 28, January 1 – March 30, 2008.

382. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, , 460 pp., October 1, 2007- March 31, 2008.

383. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Final Technical Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41091, Report No. 5, October 1, 2007 – March 31, 2008.


385. Luttrell, G.H. and Yoon, R.H., “Improved Control and Destruction of Residual Flotation Froths,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 3, October 1, 2007 – March 31, 2008.

386. Luttrell, G.H., Bratton, R.C. and Yoon, R.-H., “Development of an Optimized Control System for Heavy Medium Cyclone Circuits,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 1, October 1, 2007 – March 31, 2008.

387. Yoon, R.H., Luttrell, G.H., Honaker, R.Q., and Parekh, B.K., “Development of Novel Ultrafine Sizing Methods,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 8, October 1, 2007 – March 31, 2008.

388. Luttrell, G.H. and Yoon, R.H., “Development and Testing of a Horizontal Pressure Belt Filter,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 8, October 1, 2007 – March 31, 2008.

389. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, January 1 – March 31, 2008.

390. Luttrell, G.H. and Yoon, R.H., “Engineering Development of a Fine Particle Heavy Medium Separator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, 21 pp., October 1, 2007 – September 30, 2008.

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391. Yoon, R.H.,J. Zhang, D. Teleonis and P. Vlachos., “A Comprehensive Study of Froth Behavior,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, Report No. 1, 21 pp., October 1, 2006 – September 30, 2008.

392. Luttrell, G.H. and Yoon, R.H., “Improvements in Screen-Bowl Centrifuge Performance,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 5, October 1, 2007 – March 31, 2008.

393. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 29, April 1 – June 30, 2008.

394. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, April 1 – June 30, 2008.

395. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Quarterly Status Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, Report No. 30, July 1 – September 30, 2008.

396. Yoon, R.H., and Luttrell, G.H., “Advanced Dewatering Systems Development – Phase II,” Final Technical Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Contract No. DE-AC26-98FT40153, 224 pp., July14, 2000 – July 14, 2008.

397. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 1, July 1, 2008 – September 30, 2008.

398. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 2, 23 pp., October 1, 2008 – December 31, 2008.

399. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 6, April 1, 2008 – September 30, 2008.

400. Luttrell, G.H. and Yoon, R.H., “Engineering Development of a Fine Particle Heavy Medium Separator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 5, April 1, 2008 – September 30, 2008.

401. Luttrell, G.H., Bratton, R.C. and Yoon, R.-H., “Development of an Optimized Control System for Heavy Medium Cyclone Circuits,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 2, April 1, 2008 – September 30, 2008.

402. Yoon, R.-H., Luttrell, G.H., Vlachos, P. and Teleonis, P., “Development of a Turbulent Flotation Model and a Computer Simulator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, Report No. 2, 12 pp., October 1, 2007 – September 30, 2008.

403. Luttrell, G.H. and Yoon, R.-H., “Proof-of-Concept Testing of a Combined Fine Coal Cleaning and Dewatering Process,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT42457, Report No. 1, October 1, 2007 – September 30, 2008.

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405. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, July 1 – September 30, 2008.

406. Yoon, R.-H., “Measurement of Surface Forces Between Hydrophobic Surfaces,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, October 1, 2007 – September 30, 2008.

407. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, October 1, 2008 – December 31, 2008.

408. Yoon, R.H. and Luttrell, G.H., “Development of a Novel Fine Particle Centrifuge,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-01NT41607, Report No. 7, October 1, 2008 – March 31, 2009.

409. Luttrell, G.H. and Yoon, R.H., “Engineering Development of a Fine Particle Heavy Medium Separator,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT42457, Report No.5, October 1, 2008 – March 31, 2009.

410. Luttrell, G.H., Bratton, R.C. and Yoon, R.-H., “Development of an Optimized Control System for Heavy Medium Cyclone Circuits,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT41607, Report No. 3, 11 pp., October 1, 2008 – March 31, 2009.

411. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 3, 21 pp., January 1, 2009 – March 30, 2009.

412. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies”, Quarterly Project Status Report, U.S. Department of Energy, National Energy Technology Center, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 1 pp., January 1 – March 31, 2009.

413. Yoon, R.H., “Crosscutting Technology Development at the Center for Advanced Separation Technologies,” Semi-Annual Technical Progress Report, U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, Pennsylvania, Cooperative Agreement Award No. DE-FC26-02NT41607, 142 pp., October 1, 2008- March 31, 2009.

414. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 4, 14 pp., April 1, 2009 – June 30, 2009.

415. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 5, 118 pp., July 1, 2009 – September 30, 2009.

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416. Yoon, R.-H., “Measurement of Surface Forces Between Hydrophobic Surfaces,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, October 1, 2008 – September 30, 2009.


418. Yoon, R.-H and Jialin Wang., “Gas-Gas Separation by Selective Hydrate Formation,” Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, October 1, 2008 – September 30, 2009.

419. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 6, 32 pp., October 1, 2009 – December 31, 2009.


421. Luttrell, G.H. and R.-H. Yoon, “Dry Beneficiation of Thermal Coals in India,” Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 7, 20 pp., January 1, 2010 – March 30, 2010.

422. Luttrell, G.H. and R.-H. Yoon, "Dry Beneficiation of Thermal Coals in India," Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 8, April 1, 2010 - June 30, 2010, 22 pp.

423. Luttrell, G.H. and R.-H. Yoon, "Dry Beneficiation of Thermal Coals in India," Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 9, July 1, 2010 - September 30, 2010, 36 pp.

424. Luttrell, G.H. and R.-H. Yoon, "Dry Beneficiation of Thermal Coals in India," Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 10, October 1, 2010 - December 31, 2010, 4 pp.

425. Luttrell, G.H. and R.-H. Yoon, "Dry Beneficiation of Thermal Coals in India," Project Status Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia under the U.S. Department of State (DoS), Asia-Pacific Partnership on Clean Development and Climate, APP Task Force: Coal Mining, Cooperative Agreement No. S-LMAQM-07-GR-341, Report No. 11, January 1, 2011 - March 30, 2011, 12 pp.

426. Luttrell, G.H., Bratton, R.C. and Yoon, R.-H., "Engineering Development of a Fine Particle Dense Medium Separator," CAST II - Final Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy Contract DE-FC26-02NT42457, June 23, 2010, 25 pp.

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427. Keles, S., Luttrell, G.H. and Yoon, R.-H., "Development of a Fine Particle Centrifuge," CAST II - Final Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy Contract DE-FC26-02NT41607, June 23, 2010, 199 pp.

428. Salomon, J.A., Luttrell, G.H. and Yoon, R.-H., "Development and Testing of a Horizontal Pressure Belt Filter," CAST II - Final Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy Contract DE-FC26-02NT41607, June 30, 2010, 90 pp.

429. Burchett, R.T., Luttrell, G.H. and Yoon, R.-H., "Improvements in Screenbowl Centrifuge Performance," CAST II - Final Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy Contract DE-FC26-02NT41607, June 21, 2010, 28 pp.

430. Luttrell, G.H. and Yoon, R.H., "Engineering Development of a Fine Particle Heavy Medium Separator," Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT42457, Report No.6, October 1, 2009 - September 30, 2010, 6 pp.

431. Freeland, C., Luttrell, G.H. and Yoon, R.-H., "Proof-of-Concept Testing of a Combined Fine Coal Cleaning and Dewatering Process," Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-02NT42457, Report No. 3, October 1, 2009 - September 30, 2010, 7 pp.

432. Yoon, R.-H., Luttrell, G.H., Vlachos, P. and Teleonis, P., "Development of a Turbulent Flotation Model and a Computer Simulator," CAST III - Final Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia, Subaward under the U.S. Department of Energy (DOE) Cooperative Agreement No. DE-FC26-05NT42457, Submitted November 15, 2010, 116 pp.

433. Yoon, R. and Wang, J., “Gas-Gas Separation by Selective Hydrate Formation,” Annual Technical Progress Report, Center for Advanced Separation Technologies, Virginia Tech, Blacksburg, Virginia. Subaward under NETL/DOE Cooperative Agreement DE-FC26-05NT42457, Report No. 2, 10/7/2009 - 10/7/2010, 8 pp.

ACADEMIC ACTIVITIES

Courses Taught at Virginia Tech:

MinE 4025: Mineral Processing MinE 4040: Mineral Processing I MinE 4042: Mineral Processing II MatE 4111: Extractive Processes MinE 3554 Resource Recovery MinE 4130: Coal Technology MinE 5041: Advanced Mineral Processing MinE 5043: Advanced Mineral Processing MinE 5045: Advanced Mineral Processing MinE 6041: Chemistry of Flotation MinE 6042: Chemistry of Flotation

Graduate Committee Chairman for the Following:

a) Ph.D. Students

1. Mark D. Pritzker, "Thermodynamic and Kinetic Studies of Galena in the Presence and Absence of

Potassium Ethyl Xanthate," Professor, Department of Chemical Engineering, University of Waterloo, April, l985.

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2. Gerald H. Luttrell, "Hydrodynamic Studies and Mathematical Modeling of Fine Coal Flotation," Professor, Department of Mining and Minerals Engineering, Virginia Tech, September, 1986.

3. Woo-Zin Choi, "A Combined Size Reduction and Liberation Model of Grinding," Professor, Department of EnvironmentalScience and Technology, Suwon University, Korea, December, l986.

4. Anton Dilojaan Paul, "Electrocatalytically Induced Liberation of Mineral Matter from Coal," Senior Research Engineer, SAIC, Pittsburgh, PA, June, 1988.

5. Cesar I. Basilio, "Fundamental Studies of Thionocarbamate Interactions with Sulfide Minerals," Group Leader, Thiele Kaolin Company, VPI&SU, April, 1989.

6. Jorge L. Yordan, "Studies on the Stability of Thin Films in Bubble-Particle Adhesion," 193 pp.; Group Leader, Luzenac America, Denver, Colorado, February, 1989.

7. Zhenghe Xu, "A Study of Hydrophobic Interaction in Fine Particle Coagulation," 336 pp.; Teck Professor, NSERC Industry Research Chair in Oil Sands Engineering and Canada Research Chair in Mineral Processing, Department of Chemical Engineering, Unversity of Alberta, Canada, April, 1990.

8. Michael Stallard, (co-advisor), "Precombustion Desulfurization of Coal by Photochemical Methods and Pyrite Depression in Froth Flotation," Regional Manager, Brinjac Engineering, Macungie, PA, April, 1990.

9. Ricky Q. Honaker, "Selective Hydrophobic Coagulation," Professor and Head, Department of Mining Engineering, University of Kentucky, KY, June, 1993.

10. Dong-Su Kim, "Studies of Precious Metal Recovery," Professor and Head, Department of Environmental Engineering, Ewhau Womens University, Seoul, Korea, December, 1992.

11. Joseph B. Zachwieja, "Surface Chemistry of Coal Pyrite Flotation/Depression," Regeional Manager, Akzo-Novel Chemicals Co., (incomplete), June 1991.

12. S.A. Ravishankar, "Surface Force Measurements for the Amine Flotation System," Technology Manager, Mining Chemicals, Cytec Industries Inc., Stamford, CT, June 1995.

13. Darrin Flinn, "Surface Forces in Flotation," Team Leader, Tech/IP Information Group, Saint-Gobain High-Performance Materials, North Borough, MA, Fall, 1997.

14. Suha Aksoy, "Hydrophobic Forces in Free Films of Water in the Presence and Absence of Suractants," Group Leader, Thiele, Kaolin Company, Sandersville, GA, December, 1997.

15. Dennis I. Phillips, “Optimum Processing of 1 mm x 0 Coal,” Consultant, Blacksburg, VA, Spring, 1998. 16. Laiqun Mao, "Modeling of Bubble-Particle Interaction Based on First Principles," Sofware Enginner, MD,

Spring, 1998. 17. Zhuo Chen, "Electrochemistry of Sphalerite Flotation," started Fall 1993; Staff Scientist,

BetzDearborn/Hercules, University of Kentucky, June, 1999. 18. Molly Hangsubcharoen, “Studies of the Triboelectrification Mechanisms of Coal and Quartz,” Professor,

Department of Chemical Engineering, King Mongkut's Institute of Technology, North Bangkok, Thailand, Spring, 1999.

19. Subramanian Vivek, "Long-Range Hydrophobic Forces between Surfaces Coated with Suracatants in Aqueous Solutions”, Unilever, NJ. December, 1998.

20. Rajesh Pazhianur, "Surface Forces in Sulfide Mineral Flotation Systems," Spring 1999. 21. Neeraj Mendiratta, "Galvanic Interactions in Sulfide Mineral Flotation Systems," Spring 2000. 22. Ismail Yildirim, "Hydrophobic-Hydrophilic Characterization of Surfaces,” Imerys, GA, Spring 2001. 23. Ramazan Asmatulu, "Dewatering Fine Particles,” Assistant Professor, Department of Mechanical

Engineering, Wishita State University, Spring 2001. 24. Jinming Zhang, MinE “Development of Environmentally Friendly Conversion Coatings for Cold-Rolled

Steel,” Nalco Company, Blacksburg, VA, Fall 2003. 25. Ian Sherrell, “Modeling Flotation,” Process Engineer, Outoteck, FL, Summer 2004. 26. Liguang Wang, “Froth Stability and Model Development,” Lecturer, School of Engineering, The

University of Queensland, Spring 2006. 27. Jinhong Zhang, MinE “Acid-Base Characterization and Surface Force Measurements,” started Fall 2000;

Assistant Professor, Department of Mining and Geological Engineering, University of Arizona, Fall 2006. 28. Jialin Wang, MSE “Development of Nano-scale Coatings for Electrogalvanized Steel,” started August

2002; Research Associate, CAST, Virginia Tech, Spring 2008.

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29. M. Kerem Eryadin, MinE “Dewatering Fine Coal,” Nalco Company, Blacksburg, VA, Summer 2009. 30. Ruijia Wang, MSE, “Surfaces Forces in Foam Films,” Spring 2010. 31. Hyunsun Do, ESM “Development of Flotation Model from First Principles,” Summer 2010; Hyndai

Shipbuilding Company, Korea. 32. Keles, Serhat, MinE, “Centrifugal Dewatering,” (Co-Advisor with G.H. Luttrell) Completed Spring 2010;

Virginia Tech. 33. Yihong Yang, ESM, “Hydrodynamics of Bubble-Particle Interaction under Turbulent Conditions,” to be

completed in Summer 2010 (co-Advisor with Prof. D. Telionis). 34. Eric Suming Yan, “Design Parameters for Electrostatic Separators,” to be completed Fall 2010. 35. Chris Barbee, Ph.D., MinE “Optimization of Dense Medium Cyclone Circuits,” (co-Advisor with G.H.

Luttrell), to be completed 2011); working at Arch Coal Company. 36. Sanja Miskovic, MinE, “Phenomenological Investigation of Mechanically Agitated Flotation Machines,”

Co-Advisor with G.H. Luttrell), to completed Fall, 2011. 37. Lei Pan, MinE, “Surface Force Measurement on the Wetting Film,” to be completed Fall 2013. 38. Zuoli Li. MinE, “Surface Force Measurement Using the AFM,” to be completed Fall, 2011

b) M.S. Students

1. John B. Sabey, "Coal Flotation in Inorganic Salt Solutions," June, l98l. 2. John G. Groppo, Jr., "Flotation of Sulfide Minerals with Alkyl Pyridinium Salts," June, 1982. 3. Woo-Zin Choi, "Comminution and Liberation Studies of Complex Sulfide Ores," October, 1982. 4. Gerald H. Luttrell, "Collectorless Flotation of Chalcopyrite and Sphalerite Ores," December, 1982. 5. Joseph B. Zachwieja, "Thermodynamic Studies of Xanthate Adsorption on Pyrite," August, 1983. 6. R. Darrell Trigg, "The Cleaning of Ultrafine Coal Using Microbubbles," April, 1984. 7. John D. Craynon, "The Collectorless Flotation of Sphalerite," July, 1985. 8. Cesar I. Basilio, "Thermodynamics and Electrochemistry of the Chalcocite-Potassium Ethyl Xanthate

System," September, 1985. 9. Jorge Yordan, "Kinetics of Bubble-Particle Adhesion," December, 1985.

10. Gregory S. Halsey, "A Preliminary Investigation of Microbubble Flotation of Fine Coal," December, 1986.

11. Courtney Young, "Nonstoichiometry of Chalcocite in Water-Xanthate Systems," 296 pp; Associate Professor, Department of Metallurgical Engineering, Montana Tech, July, 1987.

12. Waverly Hale, "Surface Chemical Aspects of Microbubble Flotation," August, l987. 13. Asa Thomas Weber, "Characterization and Scale-Up of the Microbubble Column Flotation Process,"

May, 1988. 14. Ricky Q. Honaker, "Development of the Selective-Shear Coagulation Process for Ultrafine Coal

Cleaning," September, 1988. 15. Vincent Dieudonne, "Chemical and Electrochemical Coal Cleaning in Acidic Medium: Application and

Analysis of the Process," November, 1988. 16. Jennifer Smith, "A Study of Froth Flotation Behavior," February, 1990. 17. Margaret Lagno, "Studies of Depressants for Coal Pyrite," August, 1990 (incomplete). 18. Bahar Basim, “Dewatering Fine Coal,” Fall 1997. 19. Xianguo Chen, “Control of Surface Chemistry of Gold, Pyrite and Pyrrhotite,” Fall 1997. 20. Prabhu Chandrasekhar, “Modeling and Testing of Bench-Scale Triboelectro-static Separation of Coal,”

Summer 1998. 21. Mert Kerem Earydin, “Pilot-scale Testing of Dewatering Aids”, Fall 2003. 22. Herburt Schimann, “Measurement of Detachment Forces between Air Bubble and Hydrophobic

Particle,” Fall 2005. 23. Emilio Lobato, “Determination of Surface Properties of Mineral Powders,” M.S. degree in MSE; 2004. 24. Monica Ma, MinE, “Surface Forces between Polymeric Surfaces,” Nalco Company, Singapole, China,

2006. 25. Kara Smith, MinE, “Cleaning and Dewatering of Fine Coal by Hydrophobic Displacement,” May 2008.

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26. Lei Pan, MinE, “Surface Force Measurement on the Wetting Film,” Fall 2009. 27. Chad Freeland, MinE, “Engineering Development of a Novel Fine Coal Dewatering Process”, Summer

2010. 28. Nikhil Gupta, MinE, “Dry Beneficiation of Fine Coal in India,” Spring 2010. 29. Charles Schlosser, MinE, “Gas-Gas Separation By Selective Hydrate Formation,” Fall 2010. 30. Kyle Kelly, MinE, “Development of a Comprehensive Froth Flotation Simulator”, to be completed Fall,

2010. 31. Aaron Nobel, MinE, “Laboratory Evaluation of Flotation Rotor and Stator Designs”, to be completed in

Spring, 2011. 32. Jennier Ma, MinE, “Modeling Froth Recovery: Experimental Verification,” stared June, 2010. 33. Sara Smith, MinE, “Dewatering by Displacement,” started August 2010. 34. Jing Nu, MinE, “Improving the Kinetics of Hydrate Formation,” started August 2010

c) Post Doctorial Fellows and Visiting Scholars 1. Jakko Leppinen, Ph.D. (1986) in chemistry from University of Turku, Finland; stayed during August

1986-August 1987; currently serving as Technology Director – Minerals Processing, Outotec, one of the largest global technology companies.

2. Jercy Mielczalsky. Ph.D. (1979) and Habilitation (1987) in chemistry from Silesian University, Poland; 1987-1991; Director of Research, Laboratory of Environment and Mineralogy.

3. Hiroki Yotzumoto, Ph.D. (1994) in mineral processing from Kyoto University, Japan; work done during Nov. 1994-May 1992 was used to for his Ph.D. thesis.

4. Jurgen Schoenherr, Ph.D. (1984) in Technology, Bergakademie Freiberg, Germany; came as a Fulbright Scholar during 1991-1992; currently serving as Professor at Zittau University, Germany, and Director of the Institute of Technology for Peat and Natural Products.

5. Dave Guzonas, Ph.D. (1987) in chemistry, University of Waterloo, stayed during 19??-19??; currently serving as Senior Research Scientist, Atomic Energy of Canada Limited.

6. Yakov Rabinovich, Ph.D. (1965) in colloid chemistry, Institute of Physical Chemistry (Moscow), Academy of Sciences, USSR, under the direction of Professor Derjaguin, prime author of the DLVO theory; stayed during 1991-1996; currently Research Professor at University of Florida.

7. Salah Al-Thyabat, Ph.D. (2005) in mineral processing from Nottingham University; visited in 2009 as a Fulbright scholar, Assistant Professor, Al-Hussien Bin Tala (AHU) University, Jordan.

8. Wang, Ph.D. (2008), Virginia Tech 9. Ray Wang, Ph.D. (2010), Virginia Tech 10. Serhat Keles, Ph.D. (2010), Virginia Tech 11. Other Post Doctorial Fellows and Visting Scholars

a. from Virginia Tech Cesar Basilio, Ph.D. (1989), Zhenghe Xu (1990), Dongping Tao, Ph.D. (1994), Ismail Yildirim, Ph.D. (2001); Ramazan Asmatulu, Ph.D. (2001), Jihong Zhang, Ph.D. (2006)

b. from China Maixi Lu and Jaeshen Oh, China University of Mining & Technology; others

c. from Korea Oh-hyung Han, Chosun University; Jindo Chung, Hoseo University; Hoseok Jeon, Korea Institute of Geology and Mining: Sang Eun Lee, Hankyung National University

d. from Austalia Ron Woods Chris Wood

e. from Brazil Adão Benvindo da Luz

f. from Sweden Robert Pugh Jan Christer Eriksson

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g. from Russia Anatoly Mesenyashin

12. Currently Employed Post Doctorial Fellows a. Jongho Cha, Ph.D. (2010), Korea Institute of Science and Technology

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