Cloud Peak Energy CEO to Speak at the Morgan Stanley Global Metals & Mining Conference

November 3, 2011

Dateline:

GILLETTE, Wyo.

Public Company Information:

NYSE:
CLD

GILLETTE, Wyo.--(BUSINESS WIRE)--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, announced that Colin Marshall, Cloud Peak Energy’s President and Chief Executive Officer, will speak at the Morgan Stanley Global Metals & Mining Conference at 2:40 p.m. ET on Thursday, November 17, 2011, in New York City.

Mr. Marshall’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 90 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 coal producers in the United States. 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 Powder River Basin, the lowest cost major coal producing region in the nation. The Antelope mine and Cordero Rojo mine are located in Wyoming and the Spring Creek mine is located near Decker, Montana. With approximately 1,550 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.

Contact:

Cloud Peak Energy Inc.
Karla Kimrey, 720-566-2932
Vice President, Investor Relations