Antelope Mine

Antelope Mine is fifty-five miles north of Douglas, Wyoming in the south-central portion of the Powder River Basin. Rio Tinto Energy America acquired the mine in 1993 from Northern Energy Resource Company, a mining and natural resource company of PacifiCorp.

Antelope Mine is located at the south end of the Wyodak seam, the principal economic coal seam in the Wyoming portion of the Powder River Basin. Two different seams are mined at Antelope: the Anderson and the Canyon. The Anderson coal seam is 40 feet thick and the Canyon coal seam is 35 feet thick. The coal's typical average quality is 8,850 Btu subbituminous thermal coal.

Antelope’s production has continued to increase each year for the last 20 years. The mine is permitted for 36 million tons of coal annually.  Coal mined from Antelope is shipped primarily to Illinois, Oklahoma, Michigan and Texas.

As of December 31, 2006 Antelope Mine employs 432 people. Sixty-eight percent of the employees reside in Converse County and 32 percent reside in Campbell County. The mine is a nonunion operation.

Antelope Mine was awarded both the Safe Sam and the Safest Coal Mine in Wyoming in 2000 for the most hours worked without a lost time accident at 453,882 hours. Antelope was also awarded the 2000 Sentinels of Safety award by the U.S. Department of Labor. The Sentinels of Safety is an award that recognizes the surface coal mine in the United States with the best safety performance for the year. Antelope was also recognized for the best safety performance in the U.S. in the surface coal mine category in 2000.

2006 Awards received by RTEA
Other Awards received by RTEA