Operator

Marianaminerals
Moab, UT
On-site

Who this role is best for

Aimed at mid-level to senior mining professionals who can operate heavy equipment and contribute to safety and production goals.

Best fit for

  • Candidates with prior experience in operating heavy mining equipment and a track record of prioritizing safety in high-risk environments
    — “safe and efficient operation of mobile heavy equipment”
  • Individuals who thrive in physically demanding work settings and are adaptable to rotating or dynamic work schedules
    — “work across all mine areas as needed”
  • Professionals with a strong mechanical aptitude and willingness to engage in manual labor and equipment servicing
    — “assist maintenance personnel by communicating equipment issues, supporting troubleshooting, and performing basic servicing”

Things to consider

  • The role involves exposure to hazardous environments and requires strict adherence to PPE and safety protocols
    — “Must wear and utilize all required PPE”
  • Candidates must be prepared to work in extreme weather conditions and on uneven terrain for extended periods
    — “Ability to work in all weather conditions, including extreme temperatures”
  • The position requires a valid driver’s license, which may be a barrier for some applicants
    — “Must possess or be able to obtain a valid driver’s license”

How to stand out

  • Highlight experience with multiple types of heavy equipment and documented safety compliance in prior roles
    — “Safely operate heavy equipment including loaders, bulldozers, excavators, graders, water trucks, and blasthole drill rigs”
  • Emphasize your ability to conduct thorough equipment inspections and maintain operational efficiency
    — “Perform and document accurate pre-shift and post-shift inspections on all assigned equipment”
  • Showcase your communication skills with examples of effective shift handovers or team collaboration
    — “Provide clear shift handover notes to ensure continuity between crews”
  • Demonstrate a commitment to safety culture through your past participation in safety initiatives or training
    — “Demonstrate strong hazard recognition skills and actively participate in daily safety meetings”
  • Include examples of working in teams to support training and continuous improvement efforts
    — “Participate in task training for new operators and support continuous improvement initiatives”
Pace · SteadyCollaboration · MediumAutonomy · MediumDecision Impact · Individual

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • Safe and efficient operation of heavy equipment
  • Maintenance of clean and organized operating areas
  • Compliance with MSHA standards
Typical background
Heavy Equipment OperatorMining OperationsMechanical Engineering

Skills & requirements

Required

Heavy Equipment OperationMSHA ComplianceEquipment MaintenanceSafety ProceduresGround Support TasksBasic Servicing

Preferred

MSHA Surface Miner Training

About the role

Original posting from Marianaminerals via Ashby

ABOUT MARIANA MINERALS

Mariana Minerals is a software-first, vertically integrated minerals company on a mission to supply the critical minerals powering modern energy, AI, and defense technologies. We’re reimagining the minerals supply chain by combining deep industry expertise with advanced software, automation, and data-driven decision-making.

Position Summary:

The Heavy Equipment Operator plays a critical operational role in supporting mine production through the safe and efficient operation of mobile heavy equipment, including loaders, dozers, excavators, graders, water trucks, and drill rigs.

This position is responsible for conducting equipment inspections, maintaining safe working conditions, contributing to production targets, supporting operational and maintenance teams, and ensuring compliance with MSHA standards and company procedures. The ideal candidate demonstrates strong situational awareness, mechanical aptitude, and the ability to work effectively in a dynamic mining environment.

Housing can be provided onsite.

Essential Duties and Responsibilities:

Operational Responsibilities

· Safely operate heavy equipment including loaders, bulldozers, excavators, graders, water trucks, and blasthole drill rigs.

· Work across all mine areas as needed, including active pits, dumps, haul roads, and process areas.

· Operate equipment in a manner that maximizes productivity while minimizing downtime, fuel use, and equipment wear.

· Perform and document accurate pre‑shift and post‑shift inspections on all assigned equipment.

· Conduct ground support tasks such as shoveling, spotting, barricading, and general labor when required.

· Assist maintenance personnel by communicating equipment issues, supporting troubleshooting, and performing basic servicing.

· Maintain clean, safe, and organized operating areas.

Safety & Compliance

· Always follow MSHA, OSHA, and company safety procedures, including lockout/tagout, hazard reporting, and traffic rules.

· Demonstrate strong hazard recognition skills and actively participate in daily safety meetings.

· Ensure equipment operation and ground activities comply with environmental and regulatory expectations.

· Report unsafe conditions, equipment damage, and near misses immediately.

Collaboration & Communication

· Communicate effectively with supervisors, maintenance, and fellow operators.

· Provide clear shift handover notes to ensure continuity between crews.

· Participate in task training for new operators and support continuous improvement initiatives.

Required Qualifications & Experience:

· Ability to learn and apply federal, state, local, and company safety and environmental regulations.

· Strong written and verbal communication skills.

· Willingness to perform manual labor as needed.

· Flexibility to train on additional equipment and roles.

· Compliance with all company policies and procedures.

· MSHA Surface Miner Training preferred.

· Commitment to maintaining a safe work environment.

· Must possess or be able to obtain a valid driver’s license.

Physical Requirements

· Ability to walk long distances over rough, uneven terrain and climb ladders and structures.

· Ability to lift a minimum of 50 pounds.

· Ability to work in all weather conditions, including extreme temperatures.

· Must wear and utilize all required PPE.

· Must be able to work in environments that may include exposure to fumes, dust, diesel, solvents, sulphuric acid, and other hazardous materials.

OUR CULTURE IS BUILT ON FOUR PRINCIPLES:

Everyone Gets Home Safe. We never put speed or cost ahead of people.

Extreme Ownership. We take full responsibility for outcomes, relentlessly driving toward solutions.

Engineer Out Requirements, then Automate. We simplify, optimize, and then automate for scale.

Share Your Legos. We collaborate openly, share knowledge, and empower each other to build bigger, better solutions.

Join us as we build the future of responsible mineral sourcing and supply!

Source: Marianaminerals careers (Ashby)

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