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Unimin Corporation is a technology- driven company drawing from a diversified product portfolio and worldwide production capabilities. The company is North America's largest producer of silica sand, nepheline syenite and high purity quartz, and a supplier of feldspar, ball clay, kaolin, calcium carbonate, quicklime and hydrate. Unimin operates over 40 mining and mineral processing facilities in the United States, Canada and Mexico.
Unimin offers a complete portfolio of high purity core and molding sands. INCAST® core and molding grades range from GFN 25 for lost foam backing...