Chief Assayer

The Jerritt Canyon deposit was discovered in 1972, and the first gold production from the property occurred in 1981. The Jerritt Canyon property contains 30,821 hectares of mining claims located in the mining-friendly state of Nevada. First Majestic acquired the Jerritt Canyon Gold Mine from Sprott Mining Inc. on April 30, 2021. In May 2023, operations were suspended to prioritize exploration and technical studies.

Jerritt Canyon is now entering a new phase of evaluation and planning, requiring substantial technical support to advance the work necessary for a potential future restart of operations.

The Jerritt Canyon deposit was discovered in 1972, and the first gold production from the property occurred in 1981. The Jerritt Canyon property contains 30,821 hectares of mining claims located in the mining-friendly state of Nevada. First Majestic acquired the Jerritt Canyon Gold Mine from Sprott Mining Inc. on April 30, 2021. In May 2023, operations were suspended to prioritize exploration and technical studies.

Jerritt Canyon is now entering a new phase of evaluation and planning, requiring substantial technical support to advance the work necessary for a potential future restart of operations.

The Chief Assayer is the senior technical leader responsible for the safe, accurate, timely, and reliable operation of the mine's assay laboratory and associated analytical functions. This role provides leadership over all assaying activities supporting exploration, geology, mining, processing, metallurgical testing, grade control, and production.

• Lead the day-to-day operation and technical management of the mine-site or central assay laboratory.
• Establish, implement, and maintain analytical methods and standard operating procedures for ore, concentrate, drill-core, exploration, process, and environmental samples.
• Oversee fire assay, wet chemistry, instrumental analysis, and other appropriate analytical techniques for precious metals, base metals, and other economically significant elements.
• Ensure accurate and timely assay results for grade control, exploration, resource definition, metallurgical testing, and production reconciliation.
• Develop and maintain quality assurance/quality control (QA/QC) programs, including certified reference materials, blanks, duplicates, check assays, control charts, and proficiency testing.
• Investigate analytical discrepancies, anomalous results, outliers, and quality-control failures and implement appropriate corrective actions.
• Establish appropriate sample preparation, crushing, pulverizing, splitting, weighing, digestion, fusion, cupellation, and analytical procedures.
• Review and approve assay results before their release to geology, metallurgy, mine operations, or management.
• Maintain laboratory records, analytical documentation, certificates, calibration records, and chain-of-custody procedures.
• Ensure laboratory equipment is properly operated, calibrated, maintained, and fit for purpose.
• Manage laboratory supplies, reagents, consumables, equipment requirements, and operating budgets.
• Recruit, train, supervise, and evaluate assayers, laboratory technicians, and other laboratory personnel.
• Promote a strong culture of safety, quality, accuracy, integrity, and continuous improvement.
• Ensure laboratory personnel follow applicable health, safety, environmental, hazardous-material, and waste-management requirements.
• Coordinate external check assays, referee laboratories, and inter-laboratory comparisons when required.
• Work closely with Exploration and Resource Geology teams to ensure assay methods and detection limits are appropriate for exploration and resource-development programs.
• Collaborate with Mine Geology…