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Core Driller Assistant

Mariana Minerals· Plant Operations
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Moab, UTFull-timePosted 2w ago

About the role

The Core Driller Assistant works alongside the Core Driller to support diamond core drilling for mineral exploration and resource definition at an open-pit copper mine. The role emphasizes safe rig operations, careful core handling, equipment care, and adherence to health, safety, and environmental standards. Entry point for career development toward becoming a Driller.

Responsibilities

  • Help the Driller safely set up, move and tear down the drill rig and drill pad
  • Handle rods, core barrels, casing and tooling while tripping in and out of the hole
  • Pull, clean, measure, label and box core accurately, with good contamination control
  • Mix and manage drilling fluids, and maintain water lines, pumps and supply systems
  • Do pre-start inspections, greasing, lubrication and basic maintenance on the rig, compressors, pumps and support equipment
  • Help keep drill logs, footage drilled, consumables used and daily reports
  • Keep an inventory of bits and supplies, and let the Driller know when stock is low
  • Recognize changes in ground conditions and flag them to the Driller and geologist
  • Keep the drill pad and equipment area clean and organized
  • Handle equipment breakdowns and emergencies with a calm, safety-first approach

Qualifications

  • Experience as a driller's helper, offsider or rig hand, or comparable hands-on field, construction or mechanical work
  • Diamond core, reverse circulation (RC) or water-well drilling experience is a plus
  • Strong mechanical aptitude and willingness to learn drilling techniques and equipment
  • Real commitment to safety and following procedures
  • Valid driver's license; CDL is a plus

Skills

Required:drilling and rig setupcore handling and sample processingequipment maintenancesafety and compliance

Benefits

  • Housing & Relocation: Housing and relocation assistance options are available.
Last updated Oct 7, 2026. Interested? Apply on the company site.

About Mariana Minerals

We to the Future of Minerals, verify the mineral supply chain.

Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.

software-firstmineralsenergyAIdefense
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