GILLETTE, Wyo. (AP) — One of the largest coal mines in the U.S. is about to ship its billionth ton of coal.
Gillette-based Cloud Peak Energy owns the Cordero Rojo surface coal mine in the Powder River Basin in northeast Wyoming.
The mine got its start 38 years ago as the Cordero Mine. The Cordero Mine merged with Caballo Rojo Mine in 1997 to create the Cordero Rojo Mine.
Last year, almost 37 million tons of coal from the mine was sold. That ranks Cordero Rojo third in the U.S. for production.
Cloud Peak officials said Wednesday the mine will ship its billionth ton of coal in the days ahead.
Cloud Peak also operates the Antelope coal mine in Wyoming and the Spring Creek coal mine in Montana. The company has about 1,700 employees.