CHEYENNE, Wyo. — Six workers at a Wyoming uranium mine inhaled the radioactive element while cleaning up a spill inside a processing building just days before the mine delivered its first shipment last year, according to the Nuclear Regulatory Commission.
CASPER, Wyo. — A contractor was killed Saturday evening at Peabody Energy’s North Antelope Rochelle Mine, a company spokeswoman confirmed Monday morning.
Coal companies announced an agreement Thursday to consolidate ownership of a Montana mine in a deal aimed at boosting exports of the fuel to Asia through ports on the U.S. West Coast.
HELENA — Two environmental groups are suing to block expansion of the Spring Creek coal mine in Montana.
HELENA — State environmental regulators have given Tintina Resources permission to drill four wells to assess the groundwater in the area of its proposed copper mine in central Montana.
BUTTE — An official with the Jefferson County Local Development Corp. said Thursday she is surprised about a media report saying Barrick Gold Corp. is looking to sell its Golden Sunlight Mine — Whitehall’s largest employer.
A network of wellheads dot the landscape Dec. 9, 2013, at UR Energy’s Lost Creek uranium project in Sweetwater County, Wyo.
A conservation group is asking a federal judge to void a coal lease awarded to a central Montana mine by the U.S. Bureau of Land Management.
Montana's largest mining company racked up a $270 million net loss last year after writing down the value of two foreign properties and putting more focus on its precious metal mines in the Beartooth mountains, according to filings with federal regulators.
LARAMIE, Wyo. — A new limestone quarry and fine grind plant in Albany County may be operational by the end of the year.
A shovel loads haulers with coal on Jan. 9, 2014 at Cloud Peak Energy's Antelope Mine north of Douglas, Wyo. Antelope Mine is the county's fourth-largest coal mine having produced 34.3 million tons of coal in 2012. Overall, Wyoming's coal production fell by 3.3 percent in 2013. (AP Photo/Cas…
A shovel loads haulers with coal last Sunday at Cloud Peak Energy’s Antelope Mine north of Douglas, Wyo. Antelope Mine is the county’s fourth-largest coal mine, having produced 34.3 million tons of coal in 2012. Overall, Wyoming’s coal production fell by 3.3 percent in 2013.
A shovel loads haulers with coal on Jan. 9 at Cloud Peak Energy's Antelope Mine north of Douglas, Wyo.
HELENA — A possible copper mine at the headwaters of the famed Smith River has passed another hurdle.
Stillwater Mining Co. is proposing exploratory drilling in Montana's Beartooth Mountains as a prelude to a possible expansion of its platinum and palladium mine near Nye.
HELENA - The Montana State Parks division says it is formally acquiring the restored land around the old Milltown Dam site.
Federal environmental regulators are seeking public comment on a toxicology study that details the dangers of asbestos from a Montana mine that has killed hundreds of people.
BISMARCK, N.D. - A stalled coal mine reclamation project in northwestern North Dakota is being started up again.
Cramming a semester of
Former SMC employee Tara Smith, left, and professor Dr. Laura Tayer set up a lab experiment in the Fundamentals of General Chemistry class at MSU Billings on Tuesday. Smith is studying to become a nurse after she was laid off from Stillwater Mining Co. last year.