Post on 18-Jan-2019
9:00am
ICSOBA Director's Meeting 9:00am - 3:30pm, Oct 28 Sala Eineida de Moraes
3:30pm
Conference registrations 3:30pm - 7:00pm, Oct 28 Foyer
7:00pm
Opening Cocktail Sponsored by Hatch 7:00pm - 10:00pm, Oct 28 Foyer
7:00am
Conference registrations 7:00am - 8:00am, Oct 29 Foyer
8:00am
Opening remarks 8:00am - 8:30am, Oct 29
8:30am
Keynote 8:30am - 10:00am, Oct 29 Sala Mario de Andrade A+B+C+D
Keynote
Preliminary AgendaSun, Oct 28, 2018
Mon, Oct 29, 2018
KN01 - Aspects to Consider in Alumina Refining Design 8:30am - 9:00am, Oct 29 Sala Mario de Andrade A+B+C+D
KN02 - Strategic Route for the Aluminum Chain in Brazil 9:00am - 9:30am, Oct 29 Sala Mario de Andrade A+B+C+D
KN03 - Operational Excellence Through Lean Management 9:30am - 10:00am, Oct 29 Sala Mario de Andrade A+B+C+D
3 Subsessions
9:00am
Exhibition 9:00am - 5:00pm, Oct 29 Foyer
Exhibition
10:00am
Coffee sponsored by Outotec 10:00am - 10:30am, Oct 29 Foyer
10:30am
KN04 - The Current Situation and Prospect of Chinese Aluminum Market 10:30am - 11:00am, Oct 29 Sala Mario de Andrade A+B+C+D
KN05 - Aluminium: Current Drivers and Future Outlook 11:00am - 11:30am, Oct 29
Keynote 10:30am - 12:30pm, Oct 29 Sala Mario de Andrade A+B+C+D
Keynote
4 Subsessions
Sala Mario de Andrade A+B+C+D
KN06 - Bauxite, Alumina and Aluminium Market Overview and CostsAnalysis 11:30am - 12:00pm, Oct 29 Sala Mario de Andrade A+B+C+D
KN07 - Environmental Aspects of RUSAL’s Sustainable Development Program 12:00pm - 12:30pm, Oct 29 Sala Mario de Andrade A+B+C+D
12:30pm
Group photo 12:30pm - 1:00pm, Oct 29
1:00pm
Lunch sponsored by Solvay 1:00pm - 2:00pm, Oct 29
2:00pm
AL01 - A Machine Learning Approach to Early Detection of Incorrect AnodePositioning in an Aluminum Electrolysis Cell 2:00pm - 2:30pm, Oct 29
AL02 - Adaptive Fuzzy Controller to Regulate Anode Covering Material Recipe 2:30pm - 3:00pm, Oct 29
AL03 - Application of AMBS Principles and Tools to Increase Productivity ofAnode Covering Material Plants 3:00pm - 3:30pm, Oct 29
Joint Carbon - Aluminium Sessions 2:00pm - 4:30pm, Oct 29
Joint Carbon - AluminiumSessions
5 Subsessions
AL04 - Development of a Clean Sealing Paste with Improved ElectricalProperties 3:30pm - 4:00pm, Oct 29
AL05 - Electromechanical Characterization of the Ramming Paste and theAging Effect on its Performance. 4:00pm - 4:30pm, Oct 29
The Barro Alto bauxite mine: a new and whole-exploitable deposit in theGoias State, Central Brazil 2:00pm - 2:30pm, Oct 29
New discover of bauxite in Serra da Prata, center of Roraima State, extremeNorth of Brazil 2:30pm - 3:00pm, Oct 29
Mine to Refinery Integrated Model for Reserve Definition 3:00pm - 3:30pm, Oct 29
Status of Bauxite and Laterite Resources in Madhya Pradesh: A Review 3:30pm - 4:00pm, Oct 29
An introduction to Bel Air Bauxite 4:00pm - 4:30pm, Oct 29
Bauxite Reserves - Brasil, Non Brasil 2:00pm - 4:30pm, Oct 29
Bauxite
5 Subsessions
4:30pm
Coffee sponsored by Outotec 4:30pm - 5:00pm, Oct 29 Foyer
Corporate Members Council (by invitation only) 4:30pm - 6:00pm, Oct 29
8:00pm
Gala Dinner Sponsored by Hydro 8:00pm - 11:00pm, Oct 29 Sala Mario de Andrade A+B+C+D
8:00am
AL06 - Amperage Increase from 340 kA to 425 kA and Beyond in EGA DX CellTechnology 8:00am - 8:30am, Oct 30 Sala Mario de Andrade D
AL07 - Preheat and Start-up Practice of SAMI SY 300 kA Prebake Pots at ETIAluminium 8:30am - 9:00am, Oct 30 Sala Mario de Andrade D
AL08 - The Upgrading and Innovation of a Multivariate Process ParametersIntelligence Control (MPPIC) Technology for Aluminum Reduction Cells 9:00am - 9:30am, Oct 30 Sala Mario de Andrade D
AL09 - Aluminium Smelters Process Optimization through Digital Twin forthe Electrolysis Cell 9:30am - 10:00am, Oct 30 Sala Mario de Andrade D
Aluminium Technical Sessions 8:00am - 10:00am, Oct 30 Sala Mario de Andrade D
Aluminium
4 Subsessions
Alumina - Digestion and Overall 1 8:00am - 10:00am, Oct 30 Sala Mario de Andrade B
Alumina
Tue, Oct 30, 2018
Optimizing the Control of Caustic Concentration in Bayer Process Liquor 8:00am - 8:30am, Oct 30 Sala Mario de Andrade B
Transformation of a Dual Stream Low Temperature Digestion Facility 8:30am - 9:00am, Oct 30 Sala Mario de Andrade B
Boehmite Bauxite Usage at Low Temperature Digestion an Case of Study atAlumar Refinery 9:00am - 9:30am, Oct 30 Sala Mario de Andrade B
Marginal Cost Analysis in Process Decision Making 9:30am - 10:00am, Oct 30 Sala Mario de Andrade B
BXxx - Title 8:00am - 8:30am, Oct 30 Sala Mario de Andrade C
Optimization of bulldozers operation increases productivity in theoverburden removal step in Juruti Unit. 8:30am - 9:00am, Oct 30 Sala Mario de Andrade C
The evolution of bauxite mining in Jamaica – modern challenges for a matureindustry 9:00am - 9:30am, Oct 30 Sala Mario de Andrade C
Research into the behavior of bauxite during shipping: an overview of theGlobal Bauxite Working Group findings 9:30am - 10:00am, Oct 30 Sala Mario de Andrade C
4 Subsessions
Bauxite Operations Improvement 1 8:00am - 10:00am, Oct 30 Sala Mario de Andrade C
Bauxite
4 Subsessions
CB01 - Hydrodesulfurization of Petroleum Coke 8:00am - 8:30am, Oct 30 Sala Mario de Andrade A
CB02 - Rheological Characterization of Pitch and Binder Matrix 8:30am - 9:00am, Oct 30 Sala Mario de Andrade A
CB03 - Superfine Grinding of CPC with Ball Race Mills – Challenges andSolutions 9:00am - 9:30am, Oct 30 Sala Mario de Andrade A
CB04 - Comparison of Pilot Anode Production and Testing Between TwoDifferent Laboratories and Ability to Simulate Full Scale Anode Production 9:30am - 10:00am, Oct 30 Sala Mario de Andrade A
Carbon Technical Sessions 8:00am - 10:00am, Oct 30 Sala Mario de Andrade A
Carbon
4 Subsessions
9:00am
Exhibition 9:00am - 5:00pm, Oct 30 Foyer
Exhibition
10:00am
Coffee sponsored by Outotec 10:00am - 10:30am, Oct 30 Foyer
10:30am
Aluminium Technical Sessions 10:30am - 12:30pm, Oct 30 Sala Mario de Andrade D
AL10 - Paradigm Shift in the Indication of a Stable Cell during PowerModulation 10:30am - 11:00am, Oct 30 Sala Mario de Andrade D
AL11 - Integrated Power Outage Restoration Capability System (IPORCS) inPotlines 11:00am - 11:30am, Oct 30 Sala Mario de Andrade D
AL12 - Networking and Centralized Monitoring Station of Pot TendingAssembly 11:30am - 12:00pm, Oct 30 Sala Mario de Andrade D
AL13 - In-house Test Rig Facility For ECL Multi-purpose Pot Line Cranes 12:00pm - 12:30pm, Oct 30 Sala Mario de Andrade D
Digital Maturity in Alumina Refining 10:30am - 11:00am, Oct 30 Sala Mario de Andrade B
Increased production through bottleneck identification tools 11:00am - 11:30am, Oct 30 Sala Mario de Andrade B
Mathematical Model for Estimation of Thermal Energy Consumption inAlumina Refinery 11:30am - 12:00pm, Oct 30 Sala Mario de Andrade B
Use of double hose-diaphragm pumps in Bayer process for aluminaproduction 12:00pm - 12:30pm, Oct 30 Sala Mario de Andrade B
Aluminium
4 Subsessions
Alumina - Digestion and Overall 2 10:30am - 12:30pm, Oct 30 Sala Mario de Andrade B
Alumina
4 Subsessions
Development of a Model to Predict Average Moisture of Bauxite Shipmentsfrom Moisture of the Stockpile, Residence Time and Rainfall 10:30am - 11:00am, Oct 30 Sala Mario de Andrade C
CFD Analysis On The Effect Of Solid Particle Size Distribution In A Bauxite-Water Pipeline. 11:00am - 11:30am, Oct 30 Sala Mario de Andrade C
REDUCTION OF HYDRATED LIME CONSUMPTION IN A BAUXITEBENEFICIATION PLANT 11:30am - 12:00pm, Oct 30 Sala Mario de Andrade C
Digital Transformation Applied to Bauxite and Alumina Business System –BABS 4.0 12:00pm - 12:30pm, Oct 30 Sala Mario de Andrade C
CB05 - Controlling the Electrical Resistivity of Vacuum Vibrated Anodes whileMaintaining High Density 10:30am - 11:00am, Oct 30 Sala Mario de Andrade A
CB06 - Effects of Water Cooling of Green Anodes on Anode FurnaceOperation 11:00am - 11:30am, Oct 30 Sala Mario de Andrade A
Bauxite Operations Improvement 2 10:30am - 12:30pm, Oct 30 Sala Mario de Andrade C
Bauxite
4 Subsessions
Carbon Technical Sessions 10:30am - 12:30pm, Oct 30 Sala Mario de Andrade A
Carbon
4 Subsessions
CB07 - Thermomechanical Characterization of the Carbon Anode DuringBaking 11:30am - 12:00pm, Oct 30 Sala Mario de Andrade A
CB08 - Optimization of Combustion in Anode Baking Furnaces Due to HeavyOil Injection Algorithm Development 12:00pm - 12:30pm, Oct 30 Sala Mario de Andrade A
12:30pm
Lunch sponsored by Fives 12:30pm - 1:30pm, Oct 30
1:30pm
AL14 - Upgrade of Fume Treatment Plants 1 and 2 of D18+ Potline at EGAJebel Ali 1:30pm - 2:00pm, Oct 30 Sala Mario de Andrade D
AL15 - Electrolytic Cell Fume Cooling Technology- Case study in MaadenAluminium 2:00pm - 2:30pm, Oct 30 Sala Mario de Andrade D
AL16 - Enhancement on Gaseous Fluoride and Sulfur Dioxide EmissionPerformance of the Outer Compartments at EGA Al Taweelah Smelter GasTreatment Center (GTC) 2:30pm - 3:00pm, Oct 30 Sala Mario de Andrade D
Aluminium Technical Sessions 1:30pm - 3:30pm, Oct 30 Sala Mario de Andrade D
Aluminium
4 Subsessions
AL17 - The Effect of Alumina Attrition Index on Breakage in Transport andHandling 3:00pm - 3:30pm, Oct 30 Sala Mario de Andrade D
Increased Flow Rate and Reduced Filtration Cost by Using Scale RetardantFilter Technology for Bayer Liquor Clarification 1:30pm - 2:00pm, Oct 30 Sala Mario de Andrade B
Process improvement: increase filters clothes residual life through use ofpolyamide as filter media of Diastar® Filters for Green liquor filtration atBayer process. 2:00pm - 2:30pm, Oct 30 Sala Mario de Andrade B
Auto Precipitation Modelling in a Thickener 2:30pm - 3:00pm, Oct 30 Sala Mario de Andrade B
Mud level Smart Sensor based on a Two-phase model of a Mud Thickener 3:00pm - 3:30pm, Oct 30 Sala Mario de Andrade B
Near Infra-Red based Mineral Phase Online Analysis of Bauxite 1:30pm - 2:00pm, Oct 30 Sala Mario de Andrade C
Inaccuracies in Estimation of Bauxite Extractable and MineralogicalConstituents
Alumina – Clarification 1 1:30pm - 3:30pm, Oct 30 Sala Mario de Andrade B
Alumina
4 Subsessions
Bauxite Analysis and Bayer Process Analysis 1 1:30pm - 3:30pm, Oct 30 Sala Mario de Andrade C
Bauxite
4 Subsessions
2:00pm - 2:30pm, Oct 30 Sala Mario de Andrade C
The Effect of Dissolved Silica on Bayer Liquor Titration -– Using the ConnopMethod 2:30pm - 3:00pm, Oct 30 Sala Mario de Andrade C
A Novel Experimental Apparatus for Red Side Studies 3:00pm - 3:30pm, Oct 30 Sala Mario de Andrade C
CB09 - Increased Reliability and Anode Quality by Using Statistical ProcessControl Tool at Paste Plant 1:30pm - 2:00pm, Oct 30 Sala Mario de Andrade A
Carbon Technical Sessions 1:30pm - 2:00pm, Oct 30 Sala Mario de Andrade A
Carbon
1 Subsessions
3:30pm
Coffee sponsored by Outotec 3:30pm - 4:00pm, Oct 30 Foyer
4:00pm
AL18 - Environmental Aspects of RUSAL’s Sustainable Development Program 4:00pm - 4:30pm, Oct 30
Aluminium Technical Sessions 4:00pm - 5:30pm, Oct 30 Sala Mario de Andrade D
Aluminium
3 Subsessions
Sala Mario de Andrade D
AL19 - Environmental Improvements at Albras through Joint Venture Project 4:30pm - 5:00pm, Oct 30 Sala Mario de Andrade D
AL20 - Extension of Life of Aluminium Smelters 5:00pm - 5:30pm, Oct 30 Sala Mario de Andrade D
Effect of various factors on particle size distribution of tricalcium aluminate 4:00pm - 4:30pm, Oct 30 Sala Mario de Andrade B
Filtration Efficiency of Tricalcium Aluminate Filter Aid Synthesised with Batchand Continuous Stirred Reactors 4:30pm - 5:00pm, Oct 30 Sala Mario de Andrade B
Application of low molecular weight dextran for improved security filtration 5:00pm - 5:30pm, Oct 30 Sala Mario de Andrade B
Adsorbed Soda Investigations at Alunorte 4:00pm - 4:30pm, Oct 30 Sala Mario de Andrade C
Estimation of AvAl2O3 and RxSiO2 by Partial Least Square Regression (PLSR)on XRD data: A case study using low grade bauxites 4:30pm - 5:00pm, Oct 30 Sala Mario de Andrade C
Alumina – Clarification 2 4:00pm - 5:30pm, Oct 30 Sala Mario de Andrade B
Alumina
3 Subsessions
Bauxite Analysis and Bayer Process Analysis 2 4:00pm - 5:30pm, Oct 30 Sala Mario de Andrade C
Bauxite
3 Subsessions
Alternative Method of Moisture Determination in Bauxite Residue fromPress Filters 5:00pm - 5:30pm, Oct 30 Sala Mario de Andrade C
5:30pm
Members Meeting 5:30pm - 6:30pm, Oct 30 Sala Mario de Andrade C
6:30pm
Grant Program Meeting 6:30pm - 7:30pm, Oct 30
8:00pm
Dinner for 2018 ICSOBA organizers & sponsors (by invitation only) 8:00pm - 10:30pm, Oct 30
8:00am
AAxx - Title 8:00am - 8:30am, Oct 31 Sala Mario de Andrade B
Hydrocycloning Technology Contribution to Productivity Improvementthrough Fines Loss Recovery and Seed Classification 8:30am - 9:00am, Oct 31 Sala Mario de Andrade B
Reduction of energy consumption improving the Calciners’ efficiency 9:00am - 9:30am, Oct 31 Sala Mario de Andrade B
What Operators Always desired - the Innovative Light Weight Plastic
Alumina – Precipitation and Calcination 1 8:00am - 10:00am, Oct 31 Sala Mario de Andrade B
Alumina
4 Subsessions
Wed, Oct 31, 2018
Segment for Big Diameter Disc Filters 9:30am - 10:00am, Oct 31 Sala Mario de Andrade B
bxxx - Title 8:00am - 8:30am, Oct 31 Sala Mario de Andrade C
bxxx - Title 8:30am - 9:00am, Oct 31 Sala Mario de Andrade C
Leaching Characteristics of CaO-Al2O3-SiO2 Slag Produced from Smelting-Reduction of Low-Grade Bauxite 9:00am - 9:30am, Oct 31 Sala Mario de Andrade C
The Effects of Regulators on Flotation Desulfurization of High-sulfur Bauxite 9:30am - 10:00am, Oct 31 Sala Mario de Andrade C
AL21 - Smart Mobile Earthing Trolley ( SET) to Operate Pot Line with FixedNull Point in Aluminum Smelter 8:00am - 8:30am, Oct 31 Sala Mario de Andrade D
AL22 - Pot Bypass Arrangement – Lifeline of Potlines 8:30am - 9:00am, Oct 31 Sala Mario de Andrade D
AL23 - Hydraulic Wedge Puller Device “Quick Start” for Removing Wedges
Low Grade Bauxite Processing 8:00am - 10:00am, Oct 31 Sala Mario de Andrade C
Bauxite
4 Subsessions
Aluminium Technical Sessions 8:00am - 10:00am, Oct 31 Sala Mario de Andrade D
Aluminium
4 Subsessions
When Energizing an Electrolysis Cell in Aluminium Smelter 9:00am - 9:30am, Oct 31 Sala Mario de Andrade D
AL24 - Installation and Commissioning of a Magnetic Compensation Loop,Booster Rectifier and Circuit by Means of Reliable and Economically EfficientBolted Joints 9:30am - 10:00am, Oct 31 Sala Mario de Andrade D
9:00am
Exhibiton + coffee 9:00am - 5:00pm, Oct 31 Foyer
Exhibition 9:00am - 5:00pm, Oct 31 Foyer
Exhibition
10:00am
Coffee sponsored by Outotec 10:00am - 10:30am, Oct 31 Foyer
10:30am
ADVANCED PROCESS CONTROL AND OPTIMIZATION OF ALUMINA CALCINERS 10:30am - 11:00am, Oct 31 Sala Mario de Andrade B
Outotec® Pretium Calciner Optimizer – Integrating Process Know-How intoDaily Operations 11:00am - 11:30am, Oct 31 Sala Mario de Andrade B
Increasing alumina trihydrate brightness at Hindalco Ouro Preto
Alumina – Precipitation and Calcination 2 10:30am - 12:30pm, Oct 31 Sala Mario de Andrade B
Alumina
4 Subsessions
11:30am - 12:00pm, Oct 31 Sala Mario de Andrade B
Alumina quality and yield improvements at Alunorte 12:00pm - 12:30pm, Oct 31 Sala Mario de Andrade B
The failure of the embankment of the red mud reservoir at Ajka (Hungary) 10:30am - 11:00am, Oct 31 Sala Mario de Andrade C
A New Approach for Red Mud Disposal Based on Mineral Paste Production 11:00am - 11:30am, Oct 31 Sala Mario de Andrade C
DRY STACKING - FILTRATION OF BAUXITE RESIDUE WITH FILTER PRESSES 11:30am - 12:00pm, Oct 31 Sala Mario de Andrade C
IMPLEMENTATION AND OPTIMIZATION OF FILTER PRESS IN RED MUDWASHING PROCESS AT ETI ALUMINIUM 12:00pm - 12:30pm, Oct 31 Sala Mario de Andrade C
AL25 - Sustainable Treatment of Spent Potlining 10:30am - 11:00am, Oct 31 Sala Mario de Andrade D
AL26 - SPL and Red Mud: Value Creation from Hazardous Wastes 11:00am - 11:30am, Oct 31 Sala Mario de Andrade D
Residue Storage Management 10:30am - 12:30pm, Oct 31 Sala Mario de Andrade C
Bauxite Residue
4 Subsessions
Aluminium Technical Sessions 10:30am - 12:30pm, Oct 31 Sala Mario de Andrade D
Aluminium
4 Subsessions
AL27 - Pitting on Carbon Cathodes in Aluminium Electrolysis Cells 11:30am - 12:00pm, Oct 31 Sala Mario de Andrade D
AL28 - Thermal Behavior of Cathode Bottom Lining at CBA 12:00pm - 12:30pm, Oct 31 Sala Mario de Andrade D
12:30pm
Lunch sponsored by GEA 12:30pm - 1:30pm, Oct 31
1:30pm
Approaches to bauxite and alumina legacy issues in Jamaica 1:30pm - 2:00pm, Oct 31 Sala Mario de Andrade C
Geomechanical Characterization of Miraí´s Bauxite Tailing 2:00pm - 2:30pm, Oct 31 Sala Mario de Andrade C
Synthesis and characterization of hydrocalumite-type material employingbauxite-washing residues from Amazon Region (Brazil) 2:30pm - 3:00pm, Oct 31 Sala Mario de Andrade C
Development of Low-Carbon, High-Durability Concrete Using BauxiteResidue and Aluminium 3:00pm - 3:30pm, Oct 31 Sala Mario de Andrade C
Residue Storage Management 1:30pm - 3:30pm, Oct 31 Sala Mario de Andrade C
Bauxite Residue
4 Subsessions
Aluminium Technical Sessions 1:30pm - 3:30pm, Oct 31
AL29 - Experimental Validation of Methods to Reduce the Anode Rod toBeam Contact Resistance 1:30pm - 2:00pm, Oct 31 Sala Mario de Andrade D
AL30 - Measurement of Electrical Insulation Resistance of Epoxy Grout andTwo Industrial Laminates for Busbar Insulation 2:00pm - 2:30pm, Oct 31 Sala Mario de Andrade D
AL31 - X-ray Diffraction (XRD) – from Bath Composition Towards Superheat 2:30pm - 3:00pm, Oct 31 Sala Mario de Andrade D
AL32 - A Calibration Set for Secondary Alumina - HAL_SecAl-XRF - CombiningXRF, XRD and Combustion Analysis 3:00pm - 3:30pm, Oct 31 Sala Mario de Andrade D
Sala Mario de Andrade D
Aluminium
4 Subsessions
3:50pm
Coffee sponsored by Outotec 3:50pm - 4:00pm, Oct 31 Foyer
4:00pm
The use of red mud and kaolin beneficiation residue in the production of anew building material: Pozzolanic pigment for colored concrete and mortar. 4:30pm - 5:00pm, Oct 31 Sala Mario de Andrade C
Recovery of rare earth elements and refractory metals from bauxite residue 5:00pm - 5:30pm, Oct 31 Sala Mario de Andrade C
Residue Reuse 4:00pm - 6:00pm, Oct 31 Sala Mario de Andrade C
Bauxite Residue
3 Subsessions
BXxx - Title 5:30pm - 6:00pm, Oct 31 Sala Mario de Andrade C
DS01 - Optimizing Sidewell Furnaces Through Mathematical Modelling 4:00pm - 4:30pm, Oct 31 Sala Mario de Andrade D
AL33 - VirtualBatteryFoam: A Multi-physics Numerical Solver to Simulate theAluminium Electrolysis Process 4:30pm - 5:00pm, Oct 31 Sala Mario de Andrade D
AL34 - Numerical Modeling of the Alumina Distribution in Aluar Cells 5:00pm - 5:30pm, Oct 31 Sala Mario de Andrade D
AL35 - Modelling the Movement of Deposits on the Surface of CathodeBlocks in Aluminium Electrolysis Cells 5:30pm - 6:00pm, Oct 31 Sala Mario de Andrade D
Aluminium Technical Sessions 4:00pm - 6:00pm, Oct 31 Sala Mario de Andrade D
Aluminium
4 Subsessions
6:00pm
The Best Papers Awards 6:00pm - 7:00pm, Oct 31 Sala Mario de Andrade C
7:00pm
2019 Program organizers meeting 7:00pm - 10:00pm, Oct 31
8:00am
Thu, Nov 01, 2018
Field Trip Albras 8:00am - 1:30pm, Nov 1 Albras
Field trip
Field Trip Alunorte 8:00am - 1:30pm, Nov 1 Alunorte
Field trip
Field Trip Paragominas 8:00am - 10:00pm, Nov 1 Paragominas
Field trip
8:00am
Field Trip Paragominas 8:00am - 2:00pm, Nov 2 Paragominas
Field trip
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Fri, Nov 02, 2018