Covia

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Unimin (known as Covia since 2018)^[2] Corporation is a wholly owned subsidiary of global industrial minerals company SCR-Sibelco [nl] of Belgium. Unimin operates 44 mining and mineral processing facilities in the United States, Mexico and Canada. In Mexico, the company operates as Grupo Materias Primas de México and in Canada as Unimin Canada Ltd/Ltee. Executive offices are located in New Canaan, Connecticut with technology, analytical and sales service centers situated throughout North America. Unimin has over 2,400 employees located in 19 states in the U.S., Canada and Mexico.

In 2018, Unimin merged with Santrol to become Covia.