Cloud Peak Energy Executive To Speak At Raymond James 4th Annual Coal Conference

Cloud Peak Energy Inc. (NYSE:CLD), one of the largest U.S. coal producers and the only pure-play Powder River Basin (PRB) coal company, today announced that Tom Nelson, Director, Trading and Revenue Management, will speak at the Raymond James 4 ^th Annual Coal Conference at 11:30 a.m. (EDT) on Tuesday, June 19, 2012 in New York, New York.

Mr. Nelson’s presentation will be webcast live and can be accessed at the following address: www.cloudpeakenergy.com/investor-relations/webcasts-and-presentations. A replay of the webcast will be available at the same URL for seven days.

For additional investor information, please visit the investor relations section of the Cloud Peak Energy website: www.cloudpeakenergy.com/investor-relations.

About Cloud Peak Energy ^®

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is one of the largest U.S. coal producers 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, subbituminous 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 1,600 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% of the nation’s electricity.

Copyright Business Wire 2010