coal-fired

Black Hills To Close 2 Wyo. Coal-Fired Power Units
CASPER, Wyo. (AP) — Black Hills Corp. plans to close two coal-fired power units in Wyoming by early 2014 because the company says it would be too expensive to bring them in line with new Environmental Protection Agency pollution rules. The Associated Press  reported Wednesday that the units slated for closure are the Osage plant and one of six power stations at a complex in Gillette...