Our Team

Meet the experienced professionals behind our operations, working together to deliver reliable gypsum supply, safety, and long-term value.

Our People

Built on Experience & Trust

Expertise

Deep industry knowledge supporting consistent production, quality control, and regulatory compliance.

Experience

A proven team with hands-on experience in gypsum mining, processing, and distribution.

Jim Rhodes

Jim Rhodes

Provides strategic leadership and operational oversight, setting the company vision, culture, and long-term direction for the mining operation.

CEO / President

Matt Rosenberg

Matt Rosenberg

Leads financial strategy and controls, ensuring accurate reporting, strong liquidity, and disciplined capital allocation across mining, processing, logistics, and land assets.

CFO

Cole Campbell

Overall leads daily mine operations, ensuring safe, efficient, and cost-effective production across mining, processing, maintenance, and logistics.

General Manager

Christopher Mends

Christopher Mends

Responsible for daily mining operations, ensuring safe, efficient, and compliant drilling, blasting, hauling, and mine planning activities.

Assistant General Manager

Cynthia Castañeda

Cynthia Castañeda

Oversees accounts receivable and human resources, ensuring accurate records, timely reporting, and compliance with company policies and regulations.

Account Manager/HR Manager

Drill Rig
Our Culture

Dedicated to Building Better Places

Our culture is rooted in responsibility, safety, and long-term thinking. We take pride in the work we do and the impact it has on the industries, communities, and environments we support every day.

Vision

To be the enduring benchmark for gypsum production in the Southwest, known for disciplined operations, dependable supply, and the responsible stewardship of long-life mineral resources.

Mission

To responsibly mine and deliver high-purity gypsum at industrial scale, supporting essential agriculture, cement, and wallboard markets through safe operations, operational excellence, and long-term partnerships.

Core Values

We prioritize safety, operate with integrity, deliver consistent quality, honor our commitments, and respect the communities and resources we rely on.

Join Our Team

Careers That Stand the Test of Time

We are looking for dedicated individuals who value teamwork, safety, and long-term growth. Join a company built on experience, reliability, and opportunity.

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