Diversified portfolio to address critical supply needs
Principal Mineral offers products and solutions across a variety of critical minerals and materials. Our diversified operations are scaling production to supply strategic industries.
- Copper
- Rare Earths
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Isola
Principal Mineral acquired Isola Group in 2026. The company develops and manufactures high performance copper clad laminates and prepreg materials that are used to produce multilayer printed circuit boards.
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Camden Copper
The only North American manufacturer of copper foil, based in Kershaw County, South Carolina. Operations were established at the current site in 1991. In April 2025, Principal Mineral acquired the facility and launched Camden Copper to secure a critical segment of the U.S. electronics and defense supply chain.
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Rare Earth Fluoride and Metal
In 2025, Principal Mineral acquired the exclusive rights to an innovative rare earth metal production technology. Developed by Critical Mineral Innovation Hub researchers at Ames National Laboratory, we are scaling this new processing technology.
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