BELLE FOURCHE - A request by American Colloid to the South Dakota Department of Environment and Natural Resources is the first step toward the company's ongoing bentonite mining in the Belle Fourche ...

The global bentonite market has a highly consolidated vendor landscape, says Transparency Market Research, in a recently published report. Mineral technologies, Imerys SA, Clariant AG, and Ashapura ...

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LOVELL, Wyo. — It’s another hot, dry day on the state line, and the ground crunches underfoot. The desert plants are sparse, and what little grows does so in rows and bunches. Two years ago, skidders ...