Helison M.
Senior Mining Project Evaluation Manager
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John D. is a seasoned Mining Engineer with over 24 years of expertise in mining, project evaluation, and industrial operations across markets in Brazil and internationally. His extensive background encompasses stage-gate project reviews, feasibility studies, mineral resources and reserves assessment, and the management of both brownfield and greenfield capital projects. He possesses strong skills in FEL project development, technical due diligence, economic evaluation, and executive-level reporting crucial for investment decisions. At Vale S.A., as a Corporate Technical Manager, he led the technical evaluation of capital projects, significantly influencing investment decisions and supporting senior leadership with large-scale projects encompassing iron ore and base metals. Previously, as a Project Maturity Assessment Leader, he conducted assessments for an extensive capital portfolio, aiding in the governance and strategic planning of projects worth hundreds of billions of US dollars. With past roles at Votorantim Metais and AngloGold Ashanti, he honed his capabilities in process engineering and industrial beneficiation, driving initiatives in zinc and lead recovery and improving gold metallurgical recovery rates.
Experience
Corporate Technical Manager, Process and Industrial Beneficiation
Vale S.A. · 2023 — 2024Directed the technical assessment of capital projects to pinpoint investment risks and opportunities within iron ore operations across Brazil and other nations. Enhanced project visibility for executive leadership by streamlining evaluations related to project readiness, production forecasts, and investment prioritization. Conducted assessments regarding mineral resources and reserves, mine planning, engineering, construction, and economic evaluations. Played a key role in the prioritization of a strategic project pipeline with investments surpassing 𝑈𝑆$120 billion.Project Maturity Assessment Leader / Specialist Engineer
Vale S.A. · 2010 — 2023Oversaw project maturity evaluations for mining, logistics, steelmaking, and energy initiatives in Brazil and internationally, including locations like Canada, Mozambique, and South Africa. Analyzed project readiness to identify risks associated with technical, scheduling, costs, execution, and business for a capital portfolio worth around 𝑈𝑆$80 billion. Drafted technical reports and presentations for approvals within the FEL framework. Reviewed diverse aspects of project development, from engineering and mine planning to stakeholder management and economic analysis. Contributed to predictable cost and scheduling outcomes across numerous projects, particularly in iron ore and logistics.Production and Process Manager
Votorantim Metais · 2007 — 2009Administered production and process enhancement operations at a zinc beneficiation facility. Guided operational teams while managing key performance indicators, budgets, and cost control measures. Advanced zinc and lead recovery through Lean Six Sigma initiatives, leading to significant financial gains. Executed process enhancements, reducing tailings generation and financial commitments related to tailings dam expansion.Process Engineer / Process Coordinator
AngloGold Ashanti · 2006 — 2007Focused on optimizing plant processing to boost production metrics and minimize operational expenses. Assisted in refining processes across multiple areas, including crushing, grinding, and smelting. Created operational guidelines and developed process standards. Enhanced gold metallurgical recovery rates while lowering reagent consumption and overall plant costs.Process Engineer
AngloGold Ashanti Technical Services · 2005 — 2005Conducted process studies to establish treatment routes for sulfide gold ore from the Córrego do Sítio mine project. Engaged in pilot plant testing along with technical studies across several countries, contributing to comprehensive project evaluations throughout scoping and feasibility stages.Metallurgical Plant Coordinator, Heap Leaching
AngloGold Ashanti · 2002 — 2004Managed operations for a heap leaching metallurgical plant, leading production and process activities. Supervised teams, monitored KPIs, and controlled annual budgets and operating costs. Increased gold recovery rates through strategic advancements while also reducing operational costs linked to heap leaching.