Missouri Cobalt Battery Materials Processing Plant

This project helps meet the global demand for Cobalt, Nickel, and Copper as the high-performance battery market continues to grow and the Madison Mine represents a large and reliable source of minerals.

Missouri Cobalt is embarking on an ambitious environmental remediation and manufacturing effort to process clean and ethically produced battery minerals that is bringing back long-term jobs to the Madison County area.

Clayco led site mobilization and Phase I construction efforts for the new Missouri Cobalt battery materials processing plant. Missouri Cobalt is the operator of the 1,800-acre Madison Mine in Fredericktown, Missouri located 90 miles south of St. Louis. Missouri Cobalt contends the Madison Mine is likely the largest reserve in North America of cobalt.

Work began in fall of 2021 with Phase 1 project completion scheduled for the first quarter of 2023. Initial project scope included sitework, concrete, steel, tilt panels and roofing for the Hydromet processing facility. Additional operations include a new Crystallization building and processing facility, a new Electro Winning building and processing facility, new shipping and storage facility, new laboratory and other ancillary support structures throughout the site.

This processing plant represents a long term mining operation that will create more than 250 permanent local jobs to the Madison County area. By 2025, the site will employ some 600-700 temporary and permanent jobs and produce a large volume of cobalt, nickel and copper material.

Future Phases include onsite mill to process ore from the underground mine with plans to include a battery recycling plant.


Missouri Cobalt


Fredericktown, Missouri


  • Architect: Lamar Johnson Collaborative