ACKNOWLEDGEMENT I give my sincere thanks to Prof. S. BHATTACHARYA, HOD of Minerai engineering. Indian School of Mines, Dhanbad for their encouragement during my project work. No words suffice to express my regard and gratitude to Prof. R. VENUGOPAL, Department of Fuel & Mineral Engineering for his inspiring guidance. regular encouragement, immense support and heo during the course of project. I express my heartfull gratitude to Course coordinator Prof. N. R. MANDRE permitting me to carry out this project work. I am greatly thankful tc Prof. T. SHARMA for his immense support and guidance. BOB CHRISTIE KUTUM (2011 MT 0169)