Senior Geologist, Open-Pit Porphyry Copper

Asarco Llc; Arizona; On-site; USD 120,000 - 180,000; Full time

Job summary

ASARCO LLC in Arizona is seeking a Senior Geologist for open-pit porphyry copper operations. You will lead ore and grade control, geological modeling, and geometallurgical integration at a large-scale mine producing ~120,000 tons per day.

Reporting to the Chief Geologist, you will guide a team of mine geologists and technicians, ensure data quality for mine planning, reconciliation, and regulatory reporting, and drive continuous improvement in mine-to-mill performance.

Qualifications

• Bachelor's degree in Geology or related discipline.
• Minimum of 5 years of progressive experience in open-pit mine geology (porphyry copper).
• Experience in ore/grade control modeling and geological interpretation.
• Experience with QA/QC programs for drill sampling.
• Strong analytical, communication, and technical reporting skills.
• Valid Arizona driver's license.
• Ability to work in an active mining environment.
• Familiarity with Leapfrog Geo, MinePlan, Vulcan, acQuire, GIS.

Responsibilities

• Lead development and maintenance of grade control models for short- and medium-range mine planning.
• Generate dig polygons and ore/waste boundaries for sulfide mill feed and oxide leach material.
• Ensure accurate material classification by copper grade and oxidation state.
• Integrate mapping, drilling data, and production info into grade control models.
• Lead reconciliation analyses comparing resource models and plant performance.
• Maintain geological databases and prepare technical reports for site leadership.
• Provide technical mentorship to geologists and geological technicians.

Skills

Ore control

Grade control modeling

Geological interpretation

Resource reconciliation

Drill program execution

QA/QC programs

Technical reporting

Communication

Fieldwork

Education

Bachelor's degree in Geology

Bachelor's degree in Geological Engineering

Tools

Leapfrog Geo

Hexagon MinePlan

Vulcan

acQuire

GIS platforms

Job description

ASARCO LLC in Arizona is seeking a Senior Geologist for open-pit porphyry copper operations. You will lead ore and grade control, geological modeling, and geometallurgical integration at a large-scale mine producing ~120,000 tons per day.

Reporting to the Chief Geologist, you will guide a team of mine geologists and technicians, ensure data quality for mine planning, reconciliation, and regulatory reporting, and drive continuous improvement in mine-to-mill performance.