Principal Resource Geologist

About The Position

Reporting to the Technical Services Superintendent, the Principal Resource Geologist is the senior-most technical authority responsible for geological modeling and resource estimation for the Stibnite Gold Project. This role leads the development, maintenance, validation, and governance of 3D geological, geometallurgical, and mineral resource models that support mine design, production forecasting, and SEC S-K 1300 compliant reporting.

The Principal Resource Geologist integrates exploration, production, metallurgical, geotechnical, and reconciliation datasets into coherent geological interpretations and estimation frameworks. The role sets technical standards for the geology function, provides expert internal review and sign-off, supports cross-disciplinary integration, and may serve as a Qualified Person for mineral resource estimation and technical disclosure

• Ensure geological and modeling activities comply with MSHA, environmental regulations, and internal company standards.
• Demonstrate and uphold Perpetua’s commitment to safety and environmental stewardship.
• Promote data integrity, transparency, and responsible resource reporting practices.

• Lead the development and maintenance of 3D geological, structural, lithological, geometallurgical, and resource models for all deposits.
• Define modeling workflows, domaining logic, and estimation strategies consistent with best practice geostatistics and geological understanding.
• Conduct or oversee data validation, compositing, variography, estimation (OK, IDW, MIK, conditional simulation), and resource classification processes.
• Document all assumptions, methodologies, and validation outputs to ensure audit-ready models.
• Provide technical review and sign-off on geological interpretations, domains, and estimation inputs produced by junior and intermediate geologists.
• Lead internal peer reviews and participate in external technical due diligence.

• Maintain a formal resource model governance framework, including version control, documentation, and model release protocols.
• Establish and apply resource classification criteria (Measured, Indicated, Inferred) consistent with SEC S-K 1300 requirements.
• Ensure resource model outputs appropriately support modifying factor assumptions for reserve estimation workflows.
• Prepare mineral resource statements for internal and external disclosure.
• Coordinate with external Qualified Persons or consultants during annual updates, audits, or project reviews.

• Capable of serving as a Qualified Person for mineral resource estimation and related technical disclosure, if designated by Perpetua.
• Review, approve, and sign off on resource models, estimation methodologies, and supporting documentation.
• Ensure all geological, drilling, sampling, QA/QC, and estimation data used for reporting meet industry-recognized standards and demonstrate defensible data quality.
• Contribute to the preparation of the Technical Report Summary (TRS), including authoring or co-authoring relevant sections.
• Provide clear, defensible explanations of geological and estimation assumptions for regulators, investors, auditors, and other stakeholders.

• Oversee geological databases including drilling, assays, density, geotechnical, and metallurgical datasets.
• Implement and maintain robust QA/QC procedures for drilling, sampling, and analytical workflows.
• Ensure complete, traceable data lineage from raw data through compositing, domaining, estimation, and final model products.
• Integrate operational data (grade control, production drilling, blast holes, surveys) into long-range resource models.
• Collaborate with the Production Geology team to maintain alignment between resource models and operational grade control models.

• Support mine engineering with reserve-ready resource models, dilution and recovery assumptions, ore control boundaries, and grade distribution forecasts.
• Partner…