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Stacking/Sizer Operator

Operate heavy equipment to support mine production in a safe and efficient manner.

Location
Moab, UT
Compensation
Not disclosed
Level
Not specified
Type
full time · On-site

Posted by employer 1 week ago

First seen on Joblaze 6 days ago

Last verified on the company career page 17 hours ago

Apply at Mariana Minerals → Save job Scanned from marianaminerals.com

What you'll build

  • Safely operate heavy equipment including stackers and sizers
  • Perform and document accurate pre-shift and post-shift inspections
  • Assist maintenance personnel by communicating equipment issues
  • Maintain clean, safe, and organized operating areas
  • Participate in daily safety meetings

Must have

  • Experience operating heavy equipment
  • Strong written and verbal communication skills
  • Willingness to perform manual labor as needed
  • Compliance with all company policies and procedures
  • Commitment to maintaining a safe work environment
  • Must possess or be able to obtain a valid driver’s license

Nice to have

  • MSHA Surface Miner Training preferred

Not disclosed in this posting: compensation, seniority, years of experience, visa sponsorship.

Benefits

Housing can be provided onsite

Joblaze summary

The Stacking/Sizer Operator at Mariana Minerals is responsible for the safe and efficient operation of heavy equipment, specifically stackers and sizers, to support mine production. Key skills include mechanical aptitude and the ability to adhere to safety regulations while maximizing productivity. This role is suited for individuals with experience in operating heavy machinery, particularly in mining environments, who are committed to safety and teamwork. Mariana Minerals emphasizes a culture of safety and collaboration, aiming to innovate within the minerals supply chain.

Joblaze insights

  • Listed 6 days ago — first seen on Joblaze October 31, 2026. Last confirmed on Mariana Minerals's careers page November 6, 2026.

Quick facts

Is the Stacking/Sizer Operator role remote?
No — this is an on-site role in Moab, UT.
Where is the role based?
Mariana Minerals is hiring for this position in Moab, UT.
Is this full-time or contract?
Full-time for this Stacking/Sizer Operator role at Mariana Minerals.

From the original posting

Position Summary:

The Equipment Operator plays a critical operational role in supporting mine production through the safe and efficient operation of heavy equipment, including stackers and sizers.

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 stackers and sizers.

· 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:

· Experience operating heavy equipment, preferably stackers, sizers, screen plant or conveyors.

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:

Standard company text repeated across Mariana Minerals's postings is omitted here.

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