San Andreas' Premier Source for Industrial Materials
As the contract operator for the Davis Quartz site, Caldera Minerals powers regional growth with high-quality quartz, aggregates, and construction essentials.
About Us & History
Tucked into the arid hills east of Harmony, the Davis Quartz Mining Facility stands as one of San Andreas’ last active hard rock quarries. Founded in 1952 to serve the exploding postwar construction demand, the site has operated continuously for over seven decades, supplying vital materials to regional infrastructure, manufacturing, and energy projects.
Once privately owned, the site was restructured under state oversight in recent years as part of the San Andreas Industrial Resources Program, aimed at revitalizing critical mineral and material extraction operations throughout the county. With an emphasis on safety, long-term labor, and contractor accessibility, the facility is now open for both state-partnered contracts and private sector fulfillment. Today, the Davis Quartz Mining Facility processes thousands of tons of industrial-grade materials each month and serves as a central hub for organized quarrying, refinement, and logistics in Blaine County.
Davis Quartz Mining Facility operates under contract as the primary industrial operator at the Davis Quartz site, located off Senora Way. While the quarry is not owned by the company, Caldera Minerals Inc. holds the current mineral extraction and operations contract for the region. This public-private agreement grants Caldera Minerals the exclusive right to extract, refine, and transport industrial-grade materials on-site.
We work in coordination with state agencies and local authorities to maintain safe, sustainable operations that meet strict environmental and industrial regulations. As a result, all activity within the quarry is governed by permit standards, workforce compliance, and daily oversight.
What We Mine
Our facility extracts and processes a wide range of essential industrial materials that support San Andreas’ growth and infrastructure needs.
Used in refining, electronics, and high-grade glass
Vital to concrete, fracking, and solar panel production
For road base, drainage, and general construction
Core input for cement, agriculture, and metallurgy
Used in steelmaking, soil stabilization, and filler projects
Budget-friendly, high-demand bulk material for urban and rural projects
Services Offered
From raw material sales to skilled labor and on-site processing, we provide comprehensive solutions for your project needs.
Bulk orders, in-house delivery, contractor pickup, and long-term supply agreements.
Blast teams, machine operators, and general laborers for hire for private or state projects.
On-site crushing, sorting, and grading. Specialty processing available.
Union Representation: Local 92
Davis Quartz is proud to operate as a unionized facility, in partnership with the Local 92, Industrial Trades of San Andreas. We believe that a strong union is essential for a safe, fair, and productive workplace.
Our collective bargaining agreement ensures competitive wages, comprehensive benefits, robust safety protocols, and a clear path for career advancement. We are committed to working collaboratively with the union to address worker concerns and continuously improve our operations.
- Priority job callouts and dispatch notifications
- Representation in workplace disputes or injury claims
- Pay scaled by skill, seniority, and job risk
- A working-class community focused on development
Hiring Opportunities at Caldera Minerals
We are currently accepting applications and dispatch sign-ups for roles at the Davis Quartz facility. No experience required for entry-level crew. Licensed operators, drivers, and leadership positions prioritized. Submit your application to Caldera Minerals below.
Facility Map
Our facility is organized into designated zones to ensure safety and operational efficiency. Please refer to the map and legend below for an overview of the key areas.
Legend
- 🟩(Zone A) – Central Operations & Equipment Yard
- 🟧(Zone B) – Processing Area
- 🟥(Zone C) – Blasting Zone
- 🟦(Zone D) – Active Extraction Pit
- 🟨(Zone E) – Survey & Geological Work
- 🟪(Zone F) – Site Clean-Up & Maintenance