Cloud Peak Energy’s Antelope Mine receives reclamation award from Wyoming Department of Environmental Quality

On June 18, Cloud Peak Energy’s Antelope Mine, located near Douglas, Wyoming, received a prestigious reclamation award from the Wyoming Department of Environmental Quality Land Quality Division. This Excellence in Surface Mining Award was received for shrub development on reclaimed lands establishing wildlife habitat.

The Antelope Mine has established consistent shrub areas, including sagebrush stands, by application of unique land form designs and shrub-specific seeding technologies using a phased approach.

Colin Marshall, President and CEO of Cloud Peak Energy, noted that: “The company greatly appreciates this award and its recognition of the value that we place on establishing quality reclamation and post-mining wildlife habitat.”

The Antelope Mine has established a system of carefully evaluating topographic diversity in the post-mine landscape and identifying areas with the highest shrub establishment potential. Then features such as rock structures and ridgeline breaks are established in the reclamation surface to enhance moisture collection. Lastly, advanced seeding technology is applied that targets appropriate shrub species for each site by using specific planting dates, planting rates and specialized seeding equipment.

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE: CLD) is headquartered in Wyoming and is the third largest U.S. coal producer and the only pure-play PRB coal company. As one of the safest coal producers in the nation, Cloud Peak Energy specializes in the production of low sulfur, sub-bituminous coal. The company owns and operates three surface coal mines in the PRB, the lowest cost major coal producing region in the nation. The Antelope and Cordero Rojo mines are located in Wyoming and the Spring Creek mine is located near Decker, Montana. With approximately 1,500 employees, the company is widely recognized for its exemplary performance in its safety and environmental programs. Cloud Peak Energy is a sustainable fuel supplier for approximately 4 percent of the nation's electricity.