Juan Ignacio Oliva

Accountable for Plant Operations, Brine Pumping Wells, Metallurgy/Processes. Team: 120 staff members under the AOMA union. Direct extraction of battery-grade lithium carbonate. Oxidation, elution, reverse osmosis, nanofiltration, DLE, forced evaporation, TAC reactors, solvent extraction, ion exchange. Projects, engineering, Pre-Com/Com, and handover. Reception of the main equipment. Staff training and development plan. Operational readiness program: design and execution.

Accountable for Mine Management (OP), Process Plant, Maintenance, Engineering, and Projects, Metallurgy, Safety, and Environment. Team: 450 Staff & Contractors. OP Operations, Crushing, SAG and Ball Mill, Leaching and Merrill Crowe, EW and Smelting. Annual Production: 270koz Au and 6 Mkoz Ag. TSF: Dry Stacking Tails. New Production Profile. Gold Recovery increases. Predictive Metallurgy. Main Equipments replacement.

Accountable for the Plant, Maintenance, Mine, TSF Management, Engineering & Projects, and Health/Safety. Mine and Plant High Staff´s Training. Hiring Process. Continuous Improvement and Optimization to Increase Operational Efficiency. Continuous Improvement Culture. Change Management. Team: 575 Staff & Contractors, Plant Operations: SAG/Ball Crushing and Grinding, Leaching and CIP, ADR, EW, and Smelting. Metallurgical Balance. Mine-Plant Reconciliation. Mine operations: OP and UG. Long Drilling. Annual Production: 170koz Au and 350koz Ag. TSF: Downstream and InPit. Corporate Affairs and Craft Mining. Union management.

Feasibility Engineering, Reconciliation Engineering, F.E.E.D, and Detail Engineering Development for Metallurgy/Operations and Plant Maintenance discipline. Main Equipment’s Purchase. Metallurgical Variability Tests, Reagents, and Equipment with ALS and SGS (Chile, Peru, Canada). Operational Readiness Program Design and execution in the plant's Operation and Maintenance teams. Generation of PETS and Operation and Maintenance Manuals. UG Mine. Sub-Level Caving. Processing capacity: 6.2 MTA. Cu, Au, Ag. Crushing, HPGR, Grinding, Flotation, Cleaning, Cu and Pyrite Concentrates. Gravity Au recovery circuit (Knelson and Falcon). TSF: Dry Stacking Tails. Projected investment: 1.65 B U$S.

Budget Management and Execution (Annual); Average Opex: 145 M U$S, Capex: 60 M U$S. In charge of the Process Plant, Maintenance, Heap Leaching, Crushing, Grinding, CCD´s. CIL/CIC/Merrill Crowe/EW. Smelter. Cyanisorb AVR Plant (Cyanide Recovery). Chemical and Met. Lab. Metallurgical Reconciliation (Mine vs Plant). Mechanical, Electrical, I&C Maintenance. Power Generation Plant and TSF. Continuous Improvement. Process Optimization and Change Management. Cyanide Code Certification. Risk and Hazard Management: ISO 9000 / ISO 14000 / ISO 45000 / OHSAS 18000 / PAS 55 certification. Asset Management. Optimization to Increase Operational Efficiency. Continuous improvement Culture.

A cargo del Departamento de Metalurgia, Proyectos de Planta y Gestión/Operación del TSF. Balance Metalúrgico, Metal Accounting, Reconciliación. Control Operacional y Metalúrgico.

LATAM Mining Projects Lead Engineer in the Operation and Metallurgy disciplines. Expansion and capacity increase projects in Au, Ag, and Cu mineral processing plants. Basic and Detailed Engineering. Metallurgical Balances. Dry and wet comminution. Capacity equipment calculations and Operation and Maintenance Manuals generation. Main and secondary equipment purchases. Use of Modeling Software and Analytical Calculations. Use of dimensional Simulators.

Production Highlights: • Crushing and Grinding: 40 MTA (4 Operating Lines) • Annual Copper Production: 120,000 T/y • Annual Gold Production: 600,000 oz (Highest) Operational and Metallurgical Control in Crushing, Grinding, Rougher Flotation, Scavenger and Concentrate Cleaning. Metallurgy Testing in the Moly Flotation Plant. Statistical Data Entry. Monitoring and control of liners steel wear in SAGs, Ball Mills, and Re-Grinding. Metal Balance, Metallurgical Reconciliation. Optimization of reagent consumption. Budget Control and Execution. Metallurgical Lab Management and Control.

Ingeniero Junior de Procesos. Control y Operación en áreas de Digestión y Blanqueo de pulpa. Reactores de re-caustización. Horno de Cal Viva.