The Antelope Mine is located in the southern end of the PRB, approximately 60 miles south of Gillette, Wyoming. The mine extracts thermal coal from the Anderson and Canyon Seams, with up to 44 and 36 feet, respectively, in thickness. Antelope mined and shipped 34.3 million tons of low sulfur, 8,889 Btu coal in 2012. Coal mined from Antelope is shipped primarily to electric utilities in the midwest, southwest and southeast United States.

 

Antelope Mine received two prestigious awards: the State of Wyoming Mine Safety Award in the Large Surface Mine category, and the Safe Sam Award, for safety performance records as the safest large mining operation and the safest coal mine in Wyoming during 2007 and 2008. Antelope was also awarded the Sentinels of Safety award in 2000 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.

 

In 2003, 2009 and 2010 the Antelope Mine won awards from state and national organizations recognizing excellence in mine reclamation and wildlife stewardship.