---
title: 'RC Drill Assistant at Mariana Minerals'
canonical: 'https://feeny.ai/job/rc-drill-assistant-mariana-minerals-moab-d8gsbzhd9b75'
type: 'job'
last_seen: '2026-09-11'
---

# RC Drill Assistant at Mariana Minerals

- **Company:** Mariana Minerals
- **Location:** Moab, UT
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2026-05-06
- **Last confirmed live:** 2026-09-11
- **Apply:** https://jobs.ashbyhq.com/marianaminerals/b2a91a95-5c7e-4e27-b7f3-814ae7c63e11/application

**Skills:** Drilling equipment operation, Sample collection, Equipment maintenance, Drilling fluids management, Drilling experience, Mining experience, Construction experience

> The RC Drill Assistant supports the RC Driller in reverse circulation drilling operations, handling equipment setup, sample collection, and general site duties. The role requires physical strength, attention to safety, and the ability to work in remote, outdoor environments.

## Job description

## 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. Summary The RC Driller Assistant supports the RC Driller in all aspects of reverse circulation drilling operations. This position involves assisting with equipment setup, sample collection, maintenance, and general site duties. The role requires physical strength, attention to safety, and the ability to work in remote, outdoor environments while contributing to efficient and accurate drilling operations. Housing can be provided onsite.

## Responsibilities

- Assist in the setup, operation, and teardown of RC drilling rigs and equipment
- Handle drill rods, hammers, and tooling during drilling operations
- Support sample collection, ensuring proper handling, labeling, and storage
- Assist with operation of compressors, boosters, and air systems
- Mix and manage drilling fluids when required
- Perform routine maintenance and cleaning of drilling equipment
- Load and unload equipment, tools, and supplies
- Maintain a clean and safe worksite, following all safety protocols
- Assist with site preparation, including clearing and leveling drill pads
- Monitor equipment and report mechanical issues to the RC Driller
- Follow instructions from the Driller and work effectively as part of a crew
- Help manage consumables such as bits, rods, and sample bags

## Qualifications

- High school diploma or GED preferred
- Previous experience in drilling, mining, construction, or similar field is an asset
- Ability to perform physically demanding work (lifting 50+ lbs regularly)
- Basic mechanical aptitude and familiarity with tools and equipment
- Strong commitment to safety and attention to detail
- Ability to work long hours in outdoor and remote environments
- Team-oriented with good communication skills
- Valid driver’s license preferred (CDL a plus)
- Safety certifications (First Aid/CPR, MSHA/OSHA, H2S) are advantageous

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!

## About Mariana Minerals

## Company Overview
- **One-liner**: Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying the minerals critical to modern energy, AI, and defense technologies.
- **Entity Type**: Private (Series A, $85M funding in July 2025)
- **Headquarters**: San Francisco, California, United States
- **Founded**: Not publicly available
- **Founders**: Turner Caldwell (Co-Founder & CEO)

## Core Business
- **Primary industry**: Metal Ore Mining / Critical Minerals
- **Target customers**: B2B – energy, AI, and defense supply chains (including downstream manufacturers and government entities)
- **Mission or purpose**: "Create a future of critical mineral abundance" by reimagining the global minerals supply chain with software, automation, and data-driven decision making.

## Products & Services
- **Copper One (formerly Lisbon Valley Copper Mine)**: World’s first autonomous mine, located in Utah. Produces copper using integrated automation and software control. Restarted production in April 2026.
- **Lithium One**: Lithium project (on the roadmap or early development).
- **Other mineral projects**: Graphite, Uranium, Rare Earth Metals, Cobalt, Nickel, Aluminium – at various stages (stealth or roadmap).
- **CapitalProjectOS**: Internal software platform for capital project management (mentioned in leadership bio).
- **Technology Stack**: React, dbt, TypeScript, Python, TensorFlow, PyTorch, microservices, SCADA, Autodesk, and many others – indicating a strong software engineering backbone.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: Total funding – $85M Series A (July 2025, 1 investor)
- **Notable Investors/Partners**: Lead investor not publicly disclosed (Andreessen Horowitz was pitched but not confirmed as an investor). Partners include Bot Auto, WeRide, Pronto, Atoms (based on LinkedIn mentions). Also works with UMA (Utah Mining Association).
- **Growth Signals**: Headcount grew 3,575% YoY to 107 employees (as of mid-2026). 73 active job postings. Opened the world’s first autonomous mine (Copper One) in April/May 2026, generating significant industry news and social media engagement.

## Competitive Advantages
- **Software-first approach**: The company builds automation and data systems from the ground up, rather than layering tech onto legacy mining operations. This enables fully autonomous mining.
- **Vertical integration**: They develop, own, and operate mineral projects, controlling the entire value chain from extraction to processing.
- **Deep tech stack**: Use of AI/ML (TensorFlow, PyTorch), simulation, and real-time control systems to optimize mining operations.
- **First-mover in autonomous mining**: Copper One is claimed to be the world’s first autonomous mine, giving them a significant lead in operational efficiency and safety.

## Strategic Focus
- Scale autonomous mining operations beyond copper (lithium, graphite, uranium, etc.)
- Secure domestic supply of critical minerals for U.S. energy, AI, and defense needs.
- Continue aggressive hiring across engineering, operations, and field roles.
- Expand from Utah to additional sites (Houston engineering office, potential new projects).

## Why Work Here
- **Culture principles**: "Extreme Ownership", "Engineer Out Requirements, Then Automate", "Share Your Legos" – emphasizing accountability, simplification, and collaboration.
- **Work environment**: High-growth startup with a mission-driven focus on critical infrastructure. Offices in San Francisco (HQ), Houston (Engineering), and La Sal, Utah (mine site). Hybrid/remote policy not explicitly stated, but multiple office locations suggest flexibility for field vs. office roles.
- **Notable perks**: Opportunity to work on cutting-edge autonomous systems and AI in a traditional industry. Strong engineering culture with modern tech stack (React, Python, ML). Rapid career growth due to company expansion.
- **Talent sources**: Attracts talent from Tesla, Redwood Materials, Lilac, ExxonMobil, Amazon Web Services, and other tech/energy companies – indicating a high-caliber peer group.

## Sources
1. [marianaminerals.com](https://marianaminerals.com/)
2. [marianaminerals.com/careers](https://marianaminerals.com/careers)
3. [marianaminerals.com/about](https://marianaminerals.com/about)
4. [jobs.ashbyhq.com/marianaminerals](https://jobs.ashbyhq.com/marianaminerals)
5. [linkedin.com/company/mariana-minerals](https://www.linkedin.com/company/mariana-minerals)

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- [Sr. Technical Recruiter](https://feeny.ai/job/sr-technical-recruiter-mariana-minerals-san-francisco-hr9b2676c4vw) — San Francisco, CA
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