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Contractual Grade Control Geologist Jobs in Arizona

ASARCO LLC

Chief Geologist

Sahuarita, AZ · On-site

Emphasis is on short-range grade control and ore routing, geometallurgical domaining, resource growth, rigorous data collection/QAQC, and timely geological inputs to mine planning. The role reports ...

ASARCO LLC

Geologist II

Sahuarita, AZ · On-site

The Geologist II will be tasked with geologically mapping blast patterns, pit highwalls from daily ... Visit working shovel pits and report interpretations at morning grade control meeting. * Perform ...

ASARCO LLC

Sr. Geologist Mine

Sahuarita, AZ · On-site

Manage and assist with mapping, logging, and grade control * Assist in the supervision, administration, and technical overview of all geological work done at the mine as required. * Perform the ...

ASARCO LLC

Sr. Geologist Mine

Marana, AZ · On-site

Manage and assist with mapping, logging, and grade control * Assist in the supervision, administration, and technical overview of all geological work done at the mine as required. * Perform the ...

Origin Mining Company

Mine Engineer

Golden Valley, AZ · On-site

Collaborate with geology and grade control teams to ensure accurate ore delineation and resource utilization. * Support survey activities and validate mine designs against field conditions. * Conduct ...

Origin Mining Company

Mine Engineer

Golden Valley, AZ · On-site

Collaborate with geology and grade control teams to ensure accurate ore delineation and resource utilization. * Support survey activities and validate mine designs against field conditions. * Conduct ...

Capstone Mining

Technician Survey

Miami, AZ · On-site

Field Survey Support: Assist with topographic, construction, grade control, and production surveys ... Work effectively with engineers, geologists, supervisors, contractors, and operations personnel to ...

Freeport McMoRan

Senior Mine Engineer

Morenci, AZ · On-site

$102K - $140K/yr

Develop mine plans based on all available geological and geotechnical information to support long ... planning, ore control, dispatch, Geomechanical control, project management or supervision)

Freeport McMoRan

Senior Mine Engineer

Morenci, AZ · On-site

$102K - $140K/yr

Develop mine plans based on all available geological and geotechnical information to support long ... control, dispatch, Geomechanical control, project management or supervision) Knowledge of the ...

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Contractual Grade Control Geologist information

What is the difference between Contractual Grade Control Geologist vs Geotechnical Engineer?

AspectContractual Grade Control GeologistGeotechnical Engineer
CredentialsBachelor's in Geology, Geoscience, or related field; certifications varyBachelor's or Master's in Civil or Geotechnical Engineering; PE license often preferred
Work EnvironmentMining sites, exploration projects, geological surveysConstruction sites, infrastructure projects, soil and rock analysis
Industry UsageCommon in mining and mineral exploration companiesUsed across construction, infrastructure, and environmental sectors

The Contractual Grade Control Geologist primarily focuses on geological assessments and grade control in mining operations, while the Geotechnical Engineer specializes in analyzing soil and rock stability for construction projects. Both roles require technical expertise but differ in industry focus and specific responsibilities.

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Contractual Grade Control Geologist jobs near you

Chief Geologist

Sahuarita, AZ • On-site

ASARCO LLC
Coal, Metals and Minerals Mining • 1 - 5K employees

7.0

Company rating: 7.0 out of 10

Based on 16 frontline employees who took The Breakroom Quiz

29th of 41 rated mining

People enjoy working here

Good employer

Paid breaks

Learn more about ASARCO LLCexternal

Full-time

Re-posted 13 days ago

Job description

The Chief Geologist leads all mine-site geological activities for a high-tonnage open-pit, Cu-porphyry-skarn, processing sulfide ore by flotation. Emphasis is on short-range grade control and ore routing, geometallurgical domaining, resource growth, rigorous data collection/QAQC, and timely geological inputs to mine planning. The role reports to the Technical Services Manager and collaborates closely with the Corporate Technical Team and Corporate Resource Manager. The position operates with minimal supervision, exercises sound professional judgment, and demonstrates visible leadership in safety, environmental stewardship, and cross-functional teamwork with Operations, Planning, Geotechnical, Hydrogeology, and Metallurgy.
Duties & Responsibilities:
  • Lead and supervise the Mine Geology and Ore Control teams (geologists, technicians, samplers); ensure contemporary training, competency, and an inclusive, high-performance culture
  • Oversee daily geological mapping, sampling, and logging- capturing lithology, structure, alteration, and mineralization at appropriate scales for ore control and reconciliation.
  • Own short-range ore control: manage blasthole sampling and assay QAQC (CRMs, blanks, duplicates), blast-movement correction, and generation of clean dig polygons and grade control models; differentiate mill (sulfide) vs. blend vs. waste as required.
  • Integrate pit mapping, drilling, and survey data into the Leapfrog Geo 3-D model (with Seequent Central or equivalent) to maintain current, auditable interpretations for dispatch, short-range, and mid/long-range plans.
  • Collaborate with Mine Engineering (Hexagon MinePlan/MineSight) to deliver reliable geological constraints for short-, mid-, and life-of-mine plans; steward density models and dilution/loss assumptions.
  • Lead grade reconciliation (daily/weekly/monthly): ore control vs. plant vs. resource model (tonnage, grade, metal, spatial); diagnose variances and adjust domaining, parameters, or practices accordingly.
  • Coordinate drill programs-infill, metallurgical, condemnation, and exploration-including design, supervision, sampling, chain-of-custody, laboratory interfaces, and full QAQC adherence.
  • Partner with Metallurgy to define geometallurgical domains controlling throughput, recovery, reagent consumption, and concentrate quality and support blending and Mine-to-Mill strategies.
  • Direct field geology and structural mapping (including UAV/LiDAR); provide structural models and rock-type controls to Geotechnical and Hydrogeology for slope design inputs and pore-pressure management.
  • Develop and evaluate resource expansion opportunities; plan and interpret RC/diamond drilling; advance concepts efficiently from target to decision.
  • Maintain a single-source-of-truth geoscience database (e.g., acQuire or equivalent); enforce data governance, coding standards, and version control; automate dashboards and reporting (GIS/Power BI).
  • Ensure all technical records, block models, and geological disclosures are SEC S-K 1300 compliant and aligned with international best practice standards, and contribute to QP-level documentation for Technical Reports.
  • Provide timely geological input to waste characterization, permitting, and environmental management.
  • Manage contractors and budgets (drilling, labs, consultants); track cost, quality, schedule, and HSE performance.
  • Promote a strong safety culture and regulatory compliance; lead field risk assessments, task observations, and continuous improvement.
  • Prepare technical memos, presentations, and training materials; clearly translate geologic complexity into actionable guidance for operations.
  • Other duties as assigned that advance orebody knowledge, safe production, and value generation.

Knowledge, Skills & Experience:
  • Bachelor's degree in Geology or Geological Engineering required; M.S. in Economic Geology preferred.
  • Minimum 8 years in open-pit mine geology for copper operations (grade control, modeling, reconciliation); 10+ years and prior team leadership preferred.
  • Deep understanding of porphyry-skarn copper systems, including hypogene/supergene processes, oxide-transition-sulfide behavior, and geometallurgical implications for flotation.
  • Proficiency in Leapfrog Geo and geological modeling best practices; experience integrating mapping and drill data; competency with acQuire, Hexagon MinePlan/MineSight or similar, and ArcGIS/QGIS; familiarity with analytics/visualization.
  • Demonstrated success in QAQC program design and execution, resource classification, and compliance reporting standards.
  • Proven leadership, team development, contractor management, and cross-functional collaboration with Operations, Planning, Metallurgy, Geotechnical, and Hydrogeology.
  • Excellent technical writing and presentation skills; ability to prioritize, manage multiple workstreams, and deliver to deadlines.
  • Valid driver's license; ability to work safely in pit conditions and lead by example in the field.

ASARCO LLC provides equal opportunity for all individuals without regard to race, color, creed, religion, age, national origin, sex, pregnancy, sexual orientation, gender identity or expression, genetic information, actual or perceived disability, military status, veteran status, marital status, familial status, or any other characteristic(s) protected by local, state, or federal law(s).

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