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FEED

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Reporting to the Chief Mine Geologist, this position ensures that ore control decisions are informed by field observations and geological data, and that ore routing supports Mine-to-Mill optimization and performance. TPG is seeking an enthusiastic Mine Geologist to be part of a dedicated team focused on supporting copper production at a porphyry skarn copper deposit adjacent to Tucson, Arizona.

<div><div><div><div><p>TPG is seeking an enthusiastic Mine Geologist to be part of a dedicated team focused on supporting copper production at a porphyry skarn copper deposit adjacent to Tucson, Arizona. The Mine Geologist plays a critical role in supporting safe and efficient ore extraction by providing accurate geological interpretation, ore boundary definition, and field validation at a high-tonnage open-pit copper mine, which processes sulfide ore. Reporting to the Chief Mine Geologist, this position ensures that ore control decisions are informed by field observations and geological data, and that ore routing supports Mine-to-Mill optimization and performance. The Mine Geologist is instrumental in linking and integrating geology with operations, planning, and metallurgy to drive site-wide value generation.</p><p><strong>Key Responsibilities:</strong></p><ul><li>Conduct detailed pit mapping, geologic logging, and sampling with focus on lithology, structure, alteration, and mineralization, ensuring accurate material classification.</li><li>Define and update grade control polygons and ore/waste boundaries, ensuring ore is routed appropriately to mill, stockpiles, or waste deposition areas.</li><li>Support Mine-to-Mill initiatives by identifying rock characteristics that impact fragmentation, handling, and plant throughput, and communicating findings to Drill & Blast and Processing teams.</li><li>Collaborate with the Metallurgy teams to define and optimize geometallurgical parameters for mineral processing.</li><li>Contribute geological insight to shovel placement and short-range production plans to minimize dilution and maximize recovery.</li><li>Assist in the update of 3D operational geology models in Leapfrog Geo, ensuring current pit conditions are reflected in planning inputs.</li><li>Participate in F1-F3 grade reconciliation processes, comparing predicted vs. actual performance, identifying causes of discrepancies, and refining geological interpretations.</li><li>Perform QA/QC of sampling procedures, including blast hole logging, mine laboratory performance, and data integrity reviews.</li><li>Coordinate closely with Mine Engineering and Mine Operations to ensure geological guidance is actionable and aligned with the short-range mining schedule.</li><li>Report findings and provide visualizations in daily/weekly production meetings and planning reviews.</li><li>Ensure geological work and documentation adhere to international best practices, including conformity with U.S. SEC SK-1300 technical reporting standards as applicable.</li><li>Ensure compliance with site HSE standards and promote safe fieldwork practices.</li></ul></div></div></div></div><div><div><h3>Requirements</h3></div><div><p><strong>Qualifications:</strong></p><ul><li>Bachelor's degree in Geology or a related discipline</li><li>2+ years of open pit mine geology experience, preferably in porphyry copper systems</li><li>Working knowledge of ore control methods and field validation for both mill-grade material</li><li>Familiarity with Mine-to-Mill concepts, including fragmentation analysis and geometallurgical impacts</li><li>Strong software kills, preferably with proficiency in geologic/mining software (Leapfrog Geo, MinePlan, Vulcan, or similar)</li><li>Strong observational skills and ability to work closely with cross-functional teams in field and office settings</li><li>Effective communication and technical documentation skills</li><li>Valid driver's license</li></ul><p><em><strong>This position offers an excellent low-cost benefits package for medical/prescription/ dental/vision, disability coverage, life insurance and other optional coverage, and 401(k) plan with company match.</strong></em></p><p><em><strong>Salary/Exempt</strong></em></p><br/><p><em><strong>IND123</strong></em></p></div></div>

Technical Professionals Group

Mine Geologist

3D Modeling

Analysis Skills

Best Practices

Communication Skills

Copper Mining

Cross-Functional

Data Quality

Documentation

Drill and Blast

Driver's License

Geology

Geology Software

Metallurgy

Mine Operations

Mine Planning

Mine Reports

Mine Safety and Health

Mine Waste/Tailings

Mineral Processing

Mining Engineering

Mining Geology/Geoscience

Mining Industry Software

Open Cut Mining

Operations Planning

Ore Extraction

Ore Grade

Plan Meetings

Problem Solving Skills

Production Planning

Production Support

Quality Assurance

Quality Control

Reconciliation

Securities and Exchange Commission (SEC)

Technical Writing

Talent Acquisition

ADAPTED_NOW

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. 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.

<div><div><div><div><p>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.</p><br/><p><strong>Duties & Responsibilities:</strong></p><ul><li>Lead and supervise the Mine Geology and Ore Control teams (geologists, technicians, samplers); ensure contemporary training, competency, and an inclusive, high‑performance culture</li><li>Oversee daily geological mapping, sampling, and logging- capturing lithology, structure, alteration, and mineralization at appropriate scales for ore control and reconciliation.</li><li>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.</li><li>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.</li><li>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.</li><li>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.</li><li>Coordinate drill programs-infill, metallurgical, condemnation, and exploration-including design, supervision, sampling, chain‑of‑custody, laboratory interfaces, and full QAQC adherence.</li><li>Partner with Metallurgy to define geometallurgical domains controlling throughput, recovery, reagent consumption, and concentrate quality and support blending and Mine‑to‑Mill strategies.</li><li>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.</li><li>Develop and evaluate resource expansion opportunities; plan and interpret RC/diamond drilling; advance concepts efficiently from target to decision.</li><li>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).</li><li>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.</li><li>Provide timely geological input to waste characterization, permitting, and environmental management.</li><li>Manage contractors and budgets (drilling, labs, consultants); track cost, quality, schedule, and HSE performance.</li><li>Promote a strong safety culture and regulatory compliance; lead field risk assessments, task observations, and continuous improvement.</li><li>Prepare technical memos, presentations, and training materials; clearly translate geologic complexity into actionable guidance for operations.</li><li>Other duties as assigned that advance orebody knowledge, safe production, and value generation.</li></ul></div></div></div></div><div><div><h4>Requirements</h4></div><div><p><strong>Knowledge, Skills & Experience:</strong></p><ul><li>Bachelor's degree in Geology or Geological Engineering required; M.S. in Economic Geology preferred.</li><li>Minimum 8 years in open‑pit mine geology for copper operations (grade control, modeling, reconciliation); 10+ years and prior team leadership preferred.</li><li>Deep understanding of porphyry-skarn copper systems, including hypogene/supergene processes, oxide-transition-sulfide behavior, and geometallurgical implications for flotation.</li><li>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.</li><li>Demonstrated success in QAQC program design and execution, resource classification, and compliance reporting standards.</li><li>Proven leadership, team development, contractor management, and cross‑functional collaboration with Operations, Planning, Metallurgy, Geotechnical, and Hydrogeology.</li><li>Excellent technical writing and presentation skills; ability to prioritize, manage multiple workstreams, and deliver to deadlines.</li><li>Valid driver's license; ability to work safely in pit conditions and lead by example in the field.<br/><br/></li></ul><p><em><strong>This position offers an excellent low-cost benefits package for medical/prescription/dental/vision, disability coverage, life insurance and other optional coverage, and 401(k) plan with company match.</strong></em></p><br/><p><em><strong>IND123</strong></em></p></div></div><br/><br/>

Chief Geologist

ArcGIS

Budget Management

Coding Standards

Continuous Improvement

Data Collection

Data Mapping

Diamond Drilling

Drilling

Earth Sciences

Environmental Management

Establish Priorities

Field Mapping

Geographic Information Systems (GIS)

Geological Engineering

Geological Mapping

Hydrogeology

Identify Issues

Leadership

Light Detection and Ranging (LiDAR)\Laser Detection and Ranging (LADAR)

Mine Management

Mine Reconciliation

MineSight Software

Operations Control

Power BI

Presentation/Verbal Skills

Project/Program Coordination

Project/Program Management

Regulatory Compliance

Reporting Dashboards

Resource Management

Reverse Circulation (RC) Drilling

Risk Analysis

Safety/Work Safety

Sales Qualification

Source Code/Configuration Management (SCM)

Stewardship

Team Building

Team Lead/Manager

Team Player

Technical Presentation

Technical Services Management

Time Management

Training/Teaching

Writing Skills

Technical Professionals Group Jobs

Paid Sick Days

Parking

Performance Bonus

Prescription Drug Coverage

Professional Development

401K

Childcare

Concierge Services

Stock Options

Subsidized Commuting

Employee Referral Program

Flexible Spending Accounts

Employee Events

Retirement / Pension Plans

Transportation Allowance

Tuition Reimbursement

Vehicle Allowance

Work From Home

Game Rooms

Health Care on Site

Life Insurance

Merchandise Discounts

Military Leave

On Site Cafeteria

We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world. **ReqID:** J10150921 **Business Line:** Water **Business Group:** DCS **Strategic Business Unit:** West **Career Area:** Science **Work Location Model:** Hybrid **Compensation:** USD 72000 - USD 100000 - yearly

YEAR

**Company Description**
 
**Work with Us. Change the World.**
 
At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.
 
There has never been a better time to be at AECOM. With accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.
 
We're one global team driven by our common purpose to deliver a better world. Join us.
 
**Job Description**
 
AECOM is seeking a **Geologist** to join our West Region and support a diverse portfolio of mining and infrastructure projects. In this role, you will contribute to field investigations, data analysis, and technical reporting that inform critical project decisions from early planning through execution. This position offers the opportunity to work alongside experienced professionals in a collaborative, multidisciplinary environment while gaining exposure to a wide range of geological settings, project types, and clients. The ideal candidate is detail-oriented, technically curious, and motivated to grow their career within a leading global infrastructure and engineering firm.
 
**Key Responsibilities**
 
**Technical Work**
 
+ Conduct geological fieldwork, including core and cuttings logging, site mapping, sampling, and field investigations in support of mining and infrastructure projects.
 
+ Collect, compile, and analyze geological, geochemical, and geotechnical data to support project interpretation and decision-making.
 
+ Support the development and refinement of geological interpretations, cross-sections, and conceptual models.
 
+ Assist with resource modeling activities, data validation, and interpretation under the guidance of senior technical staff.
 
+ Apply established procedures, standards, and best practices to ensure accuracy, consistency, and quality of geological data and deliverables.
 
**Project Support and Collaboration**
 
+ Assist with preparation of technical reports, figures, tables, and supporting documentation for client deliverables.
 
+ Collaborate with multidisciplinary teams including mining engineers, environmental scientists, geotechnical engineers, and planners.
 
+ Support project teams with data management, document control, and coordination of technical inputs.
 
+ Participate in project meetings, site visits, and internal reviews as required.
 
+ Support adherence to project schedules, quality standards, and health and safety requirements.
 
**Qualifications**
 
**Minimum Requirements**
 
+ Bachelor’s degree in Geology or a related discipline and 4+ years of professional geological experience or demonstrated equivalency of experience and/or education.
 
**Preferred Qualifications**
 
+ 8+ years of experience supporting geological investigations for mining, infrastructure, or environmental projects.
 
+ Demonstrated field experience, including geological logging, sampling programs, and site investigations.
 
+ Strong data analysis skills with experience handling geological and geochemical datasets.
 
+ Familiarity with geological modeling, data management, or visualization software.
 
+ Ability to work effectively in a team environment and communicate technical information clearly.
 
**Additional Information**
 
Offered rate of compensation will be based on individual education, qualifications, experience, and work location. The range for this position is $72000 to $100000.
 
**About AECOM**
 
AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan.
 
AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com.
 
**What makes AECOM a great place to work**
 
You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community—where you have the freedom to grow in a world of opportunity.
 
As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.
 
**ReqID:** J10150921
 
**Business Line:** Water
 
**Business Group:** DCS
 
**Strategic Business Unit:** West
 
**Career Area:** Science
 
**Work Location Model:** Hybrid
 
**Compensation:** USD 72000 - USD 100000 - yearly

<p class="editor-emphasized"><strong>About AECOM</strong></p>
<p class="editor-emphasized">AECOM is a global network of experts working with clients, communities and colleagues to develop and implement innovative solutions to the world&rsquo;s most complex challenges.</p>
<p>Delivering clean water and energy. Building iconic skyscrapers. Planning new cities. Restoring damaged environments. Connecting people and economies with roads, bridges, tunnels and transit systems. Designing parks where children play. Helping governments maintain stability and security.</p>
<p>We connect expertise across services, markets, and geographies to deliver transformative outcomes. Worldwide, we design, build, finance, operate and manage projects and programs that unlock opportunities, protect our environment and improve people&rsquo;s lives.</p>
<p>Imagine it. Delivered.</p>
<p>&lt;iframe width="731" height="411" src="<a href="https://www.youtube.com/embed/r59sdFbjyck">https://www.youtube.com/embed/r59sdFbjyck</a>" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen&gt;&lt;/iframe&gt;</p>
<div class="fast-facts">
<h2>Fast Facts:</h2>
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<li>
<p class="dpc">Approximately $20.2 billion of revenue during fiscal year 2018</p>
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<p class="dpc">Ranked #1 in Transportation and General Building in <em>Engineering News-Record</em>&rsquo;s 2018 &ldquo;Top 500 Design Firms&rdquo;</p>
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<li>Named one of <em>Fortune</em> magazine's "World's Most Admired Companies" for the fifth consecutive year <br class="dpc" /><br class="dpc" /><img class="wp-image-38775 alignleft" src="https://www.aecom.com/content/wp-content/uploads/2018/02/WMAC2018.jpg" alt="WMAC2018" width="97" height="90" /><br class="dpc" /><br class="dpc" />
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<p class="alignleft dpc" style="font-size: 10px;">&copy;2018 Time Inc. Used under license.</p>
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AECOM

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