Blast Hole Driller

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.

The Blast Hole Driller operates production drill rigs at our open-pit copper mine, drilling blast patterns that keep mining operations on schedule. The role focuses on safe, accurate drilling to plan, equipment care, and following health, safety and environmental standards. Open-pit blast hole experience is ideal, but we also welcome strong drillers from underground, reverse circulation (RC) or diamond core backgrounds. A utility player who can both drill and run heavy equipment is strongly preferred. Help us build the world's first fully autonomous mine.

Responsibilities

• Safely operate a blast hole drill rig in line with site procedures, manufacturer specs and MSHA requirements
• Drill production holes to plan, holding the right hole locations, depths and angles
• Do thorough pre-start inspections, routine servicing and basic troubleshooting to keep downtime low
• Monitor and adjust drilling parameters such as air pressure, rotation speed and penetration rate
• Keep accurate drill logs and daily production reports
• Recognize changes in ground conditions and flag them to supervisors and blasting crews
• Work closely with blasters, operators and supervisors to keep the pit moving
• Help out on other heavy equipment as needed (training provided)
• Keep the drill bench and equipment area clean and organized
• Handle equipment breakdowns and emergencies with a calm, safety-first approach

Qualifications

• 2+ years of drilling experience, ideally as an open-pit blast hole driller
• Underground, reverse circulation (RC) or diamond core drillers are also encouraged to apply
• Strong mechanical aptitude and a solid understanding of drilling techniques and equipment
• Heavy equipment experience is a strong plus
• Real commitment to safety
• Valid driver's license; CDL is a plus

Schedule

• 7 days on / 7 days off, 12-hour day shifts
• Housing & Relocation: Housing and relocation assistance options are available.

Working Environment & Physical Requirements

• Work 12-hour shifts outdoors on drill benches and rugged terrain, in all weather and extreme temperatures
• Lift at least 50 lbs, with exposure to dust, noise, vibration and diesel
• Wear all required PPE (hard hat, steel toes, safety glasses, hi-vis, hearing protection, and a respirator when required)

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!