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Making an Impact 

WISCONSIN STRONG

As a fifth-generation company, GLC Minerals is built on a foundation of safety, sustainability, and forward-thinking performance. We lead with expertise and deliver with integrity—strengthening Wisconsin’s economy, industries, and communities every step of the way. 

LED BY EXPERTS.
DRIVEN BY RESULTS.

Our team of geologists, chemists, engineers, and manufacturing professionals brings deep technical knowledge and decades of experience to every product we make. Whether refining formulations, solving customer-specific challenges, or driving R&D innovation, our people are the core of our competitive edge. 

From lab to loadout, science guides every step—and performance is the result. 

SAFETY IS OUR STANDARD

Three Years and Counting

GLC has proudly achieved over three consecutive years without a lost-time accident—a milestone that reflects our unwavering commitment to workplace safety.

Ongoing Training

Our team participates in continuous safety education through MSHA (Mine Safety and Health Administration) and robust internal programs to ensure a culture of safety at every level.

CERTIFIED FOR QUALITY AND TRUST

We meet and exceed industry standards with certifications that reflect our commitment to excellence: 

  • Certified by DQS Inc. to ISO 9001:2015 – Quality Management 
  • Safe Feed/Safe Food – Certified Facility 
  • OMRI Listed – Organic Materials Review Institute-approved products 

STRENGTHENING WISCONSIN’S ECONOMY FROM THE GROUND UP

  • Supporting hundreds of Wisconsin farms and feed operations, strengthening the backbone of our agricultural community. 
  • Sourcing the majority of our minerals through the Great Lakes and manufacturing in Green Bay, keeping our supply chain local and sustainable. 
  • GLC Minerals’ operations at the Port of Green Bay contribute to the local economy through job creation, tax revenue, and overall economic activity.  
  • Contributing significantly to Wisconsin’s calcium carbonate market share, helping Wisconsin remain a leader in industrial minerals. 
  • Proudly partnering with organizations like Leadership Green Bay and the Greater Green Bay Chamber to shape a vibrant and resilient future for our region.