Process Maintenance Technician

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.

Through its Copper One platform, Mariana Minerals owns and operates Lisbon Valley Mining Company, a producing open-pit copper mine in southeastern Utah running 24/7.

As a Process Maintenance Technician, you'll maintain and repair everything that's "nailed to the ground": pumps, compressors, boilers, piping, valves, and the buildings that keep the operation running. The ideal candidate is strong in at least one area, such as pumps, welding, or troubleshooting, and is ready to cross-train in the rest.

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  Diagnose, install, and repair fixed plant equipment, including pumps, compressors, boilers, fans, motors, gearboxes, piping, valves, and automated valves, identifying root causes.

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  Maintain site buildings and infrastructure, including truck shops, admin buildings, and plumbing systems, along with portable equipment such as mobile air compressors and pumps.

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  Perform welding and fabrication for pipe, frames, handrails, grating, and structural repairs.

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  Perform equipment rebuilds, component replacements, lubrication, inspections, oil sampling, and other preventive and condition-based maintenance.

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  Perform basic electrical troubleshooting and repair on motors, starters, and controls, and work alongside electricians to rack out, unwire, install, and troubleshoot process equipment.

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  Safely operate forklifts, overhead cranes, boom trucks, and other material-handling equipment.

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  Document inspections, repairs, and parts in work orders and the CMMS.

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  Follow MSHA regulations, lockout/tagout procedures, PPE requirements, and company SOPs.

• Maintenance experience in fixed plant, mining, industrial, or heavy manufacturing environments.

• Strong hands-on skills in at least one area: pumps, welding and fabrication (MIG, stick, cutting), or mechanical troubleshooting.

• Working knowledge of pumps, motors, gearboxes, piping systems, and mechanical drive systems.

• Basic electrical knowledge, including reading wiring diagrams, using a multimeter, and troubleshooting motors and controls. Industrial electrical experience is a plus.

• Ability to read and interpret service manuals, parts manuals, schematics, and technical documentation.

• Ability to work safely in an active mine environment and perform physically demanding tasks.

• Experience using computerized maintenance management systems (CMMS).

• Strong communication skills and ability to work effectively with operators, electricians, and support teams.