Leads metallurgical activities for a precious metals operation, including geometallurgical modeling, heap-leach testwork, gold recovery optimization, and Merrill-Crowe processing. Supervises assay laboratory, leach pad, refinery, and processing operations while ensuring safety, environmental, quality, and regulatory compliance. Provides technical support, interprets laboratory and operational data, develops blending strategies, contributes to production targets and budgets, and prepares management reports.