Open-Pit Mine Geologist – Ore Control & Planning

ASARCO; Kearny (AZ); On-site; USD 90,000 - 120,000; Full time

Job summary

ASARCO LLC is seeking a Mine Geologist to support safe, efficient ore extraction at the Ray Mine. You will provide geological interpretation, define ore boundaries, and validate field data to optimize Mine-to-Mill and leach material performance.

You will collaborate with Operations, Drilling & Blast, and Metallurgy to refine geology-driven plans, update 3D models, and contribute to grade reconciliation and reporting in meetings. A valid driver’s license is required.

Qualifications

• Bachelor’s degree in Geology or related field.
• 2+ years of open-pit mine geology experience.
• Experience with ore control methods and field validation.
• Proficiency with Leapfrog Geo, MinePlan, or Vulcan.
• Valid driver’s license.

Responsibilities

• Conduct pit mapping, geologic logging, and sampling focusing on lithology, structure, alteration, and mineralization.
• Define and update ore control polygons and ore/waste boundaries for proper routing to mill, leach pad, or stockpiles.
• Support Mine-to-Mill initiatives by identifying rock characteristics affecting fragmentation and plant throughput, and communicate findings to Drill & Blast and Processing teams.
• Collaborate with LSXEW and Metallurgy to optimize heap leach material selection and mineralogy compatibility.
• Contribute geological insight to shovel placement and short-range production plans to minimize dilution and maximize recovery.
• Update 3D operational geology models in Leapfrog Geo under the direction of the Chief Geologist.
• Participate in grade reconciliation processes and QA/QC of sampling procedures.
• Coordinate with Survey, Mine Engineering, and Operations to ensure geological guidance is actionable and aligned with short-range schedule.
• Report findings and provide visualizations in daily/weekly planning meetings.
• Ensure geological work adheres to international best practices and SEC SK-1300 standards as applicable.
• Ensure compliance with site HSE standards.

Skills

Observational skills

Communication

Technical documentation

Team collaboration

Education

Bachelor’s degree in Geology or related field

Tools

Leapfrog Geo

MinePlan

Vulcan

Job description

ASARCO LLC is seeking a Mine Geologist to support safe, efficient ore extraction at the Ray Mine. You will provide geological interpretation, define ore boundaries, and validate field data to optimize Mine-to-Mill and leach material performance.

You will collaborate with Operations, Drilling & Blast, and Metallurgy to refine geology-driven plans, update 3D models, and contribute to grade reconciliation and reporting in meetings. A valid driver’s license is required.