ST. PAUL — Nearly two years after it was ordered by the state’s high court, a long-awaited hearing will begin Monday on a key permit for the project vying to become Minnesota’s first copper-nickel ...

BUTTE - Kevin and Jane Johnson of Butte have bought 40 acres of land holding at least a million cubic yards of a high-grade calcium bentonite, often called "the mineral of 1,000 uses." It's a business ...

THERMOPOLIS — Wyo-Ben has proposed an open pit bentonite mine in the Meeteetse Draw area near Thermopolis, according to reports. The Bureau of Land Management is accepting public comment through Aug.

Wyoming environmental regulators will investigate complaints that a bentonite mining company regularly violated rules and escaped proper oversight, Gov. Mark Gordon’s spokesman confirmed. The Wyoming ...

GREYBULL (WNE) — Greybull’s M-I SWACO bentonite mine recently was awarded the BLM’s top national environmental award for hardrock mining. The merits of the award are based on a company’s commitment to ...

Members of the public have until June 19 to tell the federal Bureau of Land Management how they feel about a Belle Fourche company's proposal to expand its bentonite clay mining operation in Butte ...

CHEYENNE, Wyo. — The market for a peculiar type of clay is looking up thanks to improved prospects for oil and gas drilling and to cat owners who use the stuff to soak up their pets' business. Over 90 ...

Calcium bentonite clay is an absorbent kind of clay that typically forms after volcanic ash ages. It’s named after Fort Benton, Wyoming, where the largest source of the clay can be found, but calcium ...

Wyoming environmental regulators will investigate complaints that a bentonite mining company regularly violated rules and escaped proper oversight, Gov. Mark Gordon’s spokesman confirmed. The Wyoming ...