ASARCO is hiring a Chief Geologist to lead all geological activities at a high-tonnage open-pit mine processing sulfide ore. You will be responsible for short-range grade control and ore routing, geometallurgical domaining, resource growth, and providing timely geological inputs to mine planning, reporting to the Technical Services Manager.
What You'll Do
- Lead and supervise the Mine Geology and Ore Control teams, ensuring contemporary training and fostering an inclusive, high-performance culture.
- Oversee daily geological mapping, sampling, and logging for ore control and reconciliation.
- Own short-range ore control, including blasthole sampling QAQC, blast-movement correction, and generation of dig polygons and grade control models.
- Integrate pit mapping, drilling, and survey data into the Leapfrog Geo 3-D model to maintain current interpretations.
- Collaborate with Mine Engineering (Hexagon MinePlan/MineSight) to deliver reliable geological constraints for mine plans.
- Lead daily, weekly, and monthly grade reconciliation between ore control, plant, and resource models.
- Coordinate drill programs, including design, supervision, sampling, and full QAQC adherence.
- Partner with Metallurgy to define geometallurgical domains controlling plant performance and support Mine-to-Mill strategies.
- Direct field and structural mapping (including UAV/LiDAR) to provide inputs for Geotechnical and Hydrogeology teams.
- Develop and evaluate resource expansion opportunities; plan and interpret RC/diamond drilling.
- Maintain a single-source-of-truth geoscience database (acQuire or equivalent), enforcing data governance and automating reporting.
- Ensure all technical records and disclosures are SEC S-K 1300 compliant and aligned with international best practices.
- Provide geological input to waste characterization, permitting, and environmental management.
- Manage contractors and budgets for drilling, labs, and consultants.
- Promote a strong safety culture, leading field risk assessments and continuous improvement.
- Prepare technical memos and presentations to translate geologic complexity into actionable guidance.
Technical Stack
- Geological Modeling: Leapfrog Geo, Seequent Central
- Mine Planning: Hexagon MinePlan/MineSight
- Database: acQuire
- Visualization & Reporting: GIS, Power BI
Team & Environment
You will lead the Mine Geology and Ore Control teams, including geologists, technicians, and samplers. You report to the Technical Services Manager and collaborate closely with the Corporate Technical Team, Corporate Resource Manager, Operations, Planning, Geotechnical, Hydrogeology, and Metallurgy.
Work Mode
This is an onsite position based at the mine site.
ASARCO is an equal opportunity employer.
