Martha E. Villalba, Ph.D. Email & Phone Number

Quebec, Canada

Assessment of the potential of Integrated Strategic Planning techniques to improve the economics, considering:Open Pit and/or Underground OptimizationActivity Based Costing (ABC) and Theory of Constraints (TTOC)Cut Off Optimization and StockpilingProcessing Optimizationand new technology

Montreal, Quebec, Canada

REPRESENTATIVE PROJECTS:Dundee Precious Metals – Timok Gold Project – Serbia (April to 16 June 2020) • Pre Feasibility study, model of initial operating cost and capital expenses based on activity base costing (ABC) theory and PEA parameters. Preliminary evaluation of optimal mine equipment fleet selection.Quebec Iron Ore – Bloom Lake Mine (2020)• Due Diligence, Feasibility study phase 2, mining review of mine production schedule optimization, mine equipment fleet selection, dilution and mining recovery assumptions, haulage system, operating cost and ore blending assumptions. Talon Metals – Tamarack (2020)• NSR formulation in preliminary economic assessment US Steel – Keetac Mine – Minnesota (2018-2020)• Phases definition and strategic mine planning evaluation based on optimization algorithms. • Optimization of hauling, production and stockpile mine-schedule (respecting lease holder agreements) IAMGOLD – BOTO Project (2019)• Technical assistance in: (1) Setting of Minesight block model to Whittle transference, and pit optimization in Whittle, (2) assessment the impact of hauling networks on the production schedule, and (3) evaluation of waste dump location changes to reduce hauling cost.ESSAR Steel – Mesabi – Minnesota (2019)• Phases definition and strategic mine planning evaluation based on optimization algorithms. Stockpile and waste dump optimization respecting lease holder agreements• Hauling systems optimization into mine production schedule evaluation (2019-present)US Steel – Minntac Mine – Minnesota (2018-2019)• Implementation of optimization algorithms to provide multiple mining alternatives given a high concentration of contaminants in Iron.• Phases definition and strategic mine planning evaluation based on optimization algorithms.

Montreal, Quebec, Canada

• Formulated a underground mine production schedule and stope layout optimization with dilution management , accounting for gold orebody uncertainty, and including mining considerations using meta-heuristic algorithms developed in C++ programming language.• Gold orebody estimation and simulations using GsLib, CCG Fortran programs, and SGems.• Calibrated control parameters in meta-heuristic algorithms using experimental design in JMP.• Assessed reliability and simulation of mining systems using Reliasoft and Arena respectively.

Montreal, Quebec, Canada

• Developed a robust simultaneous short-term sequence of mining, fleet allocation considering for mining width, and mining direction optimization to minimize costs using programming languages such as C++, and CPLEX for solving problem.• Incorporated orebody uncertainty in previous robust short term formulation and also include future data to have better informed evaluation at short scale which have good performance during operations.• Estimated and simulated orebody models using GsLib, COSMO Fortran programs, and SGems. • Mine Design and Pit Optimization using Datamine and Whittle.The Centre for Stochastic Mine Planning (COSMO) is a collaborative mining engineering laboratory based out of McGill University that implements advanced approaches to developing optimization and ore body modeling frameworks, which create value across the entire mining supply chain. COSMO is organized and administered by Professor Roussos Dimitrakopoulos who is Canada Research Chair (Tier I) in Sustainable Mineral Resource Development and Optimization under Uncertainty.

Edmonton, Alberta, Canada

• Proposed simulation to quantify the uncertainty in the global mean for improving geostatistical modeling using Fortran.• Simulation of mining systems with Visual Slam and AweSim.• Orebody estimation and simulations using GsLib, CCG Fortran programs, and SGems • Mine Design and Pit Optimization by using Matlab, Gemcom and Whitle.. Gold orebody simulation, Cut-off optimization accounting for gold orebody scenarios using GsLib and Whittle.The Centre for Computational Geostatistics (CCG) is a research program at the University of Alberta that operates similar to other industrial affiliates programs and joint industry programs at different universities. The CCG was launched with the vision of becoming a leader in the education of geostatisticians and the delivery of geostatistical tools for modeling heterogeneity and uncertainty. The CCG is organized and administered by Professors Clayton V. Deutsch who is Alberta Chamber of Resources Industry Chair in Mining Engineering and Canada Research Chair in Natural Resources Uncertainty Management

Val D'Or, Quebec, Canada

• Strategic long-term and medium-term production schedule using Vulcan, and AutoCAD in a vein gold deposit.• Prepared daily corporate report of gold ounces production, stockpiles state, plant recovery and fleet performance.

Tintaya, Espinar, Cusco, Peru

• Technical leader of resource and reserve evaluation team.• Resource estimation of skar copper, gold, silver and molybdenum deposits, classification, and reporting for medium-term and long-term mine planning. Implementation of simulation to improve production schedules using Minesight, SAGE, Vulcan, and GsLib.

Tintaya, Espinar, Cusco, Peru

• Resource estimation of skar copper deposit, gold, silver and molibdeno, classification, and reporting for medium-term and long-term mine planning. Implementation of simulation to improve production schedules using Minesight, SAGE, Vulcan, and GsLib.• Estimation of oxide and sulphide stockpiles model to assist long-term to short-term mine planning.• Formulated and implemented set the routines for daily production model estimation that define dig limits, material types based on metallurgical considerations to support short-term mine planning and reconciliation. • To reduce risk of matching production targets, developed a quarterly block model to improve medium-term mining planning, where drillholes, blastholes, quarterly geologic interpretation, and geological mapping were taking into account.• Prepared and updated (monthly and yearly) reconciliation within corporation standards, which results were discussed with geologists and engineers to improve mining activities. • Evaluated Resource and Reserve of Antapaccay and Corcohuayco project projects and Tintaya expansions. • Involved in the annual corporate resource and reserves report following JORC Code and SEC Guide. Improved mine planning practices as yellow six sigma belt.

• Study and analysis of times in the hauling system network. • Assistance on the blasting pattern design, daily topography update, short term mining cuts definition.• Collaborate on safety and environments process.

Doctor Of Philosophy - Phd, Mining Engineering

Master Of Engineering (Meng), Mining Engineering (Stochastic Mine Planning)

Thesis "Stochastic Short-term Production Scheduling Accounting for Fleet Allocation, Operational Considerations, Blending Restrictions.

Master Of Science (Msc), Mining Engineering (Geostatistics)

Thesis "Uncertainty in the Global Mean for Improved Geostatistical Modeling"

Bachelor Of Science (B.Sc.), Mining Engineering