Cloud Peak Energy Announces Schedule Change to August 4, 2010 For Second Quarter 2010 Results


July 29, 2010



Public Company Information:


GILLETTE, Wyo.--(BUSINESS WIRE)--Cloud Peak Energy Inc. (NYSE:CLD), the third-largest U.S. coal producer and the only pure-play PRB coal company, now plans to announce its second quarter 2010 financial results on August 4, 2010 after the markets close.

A conference call with management is now scheduled at 5:00 p.m. EDT on August 4, 2010 to review the results and current business conditions. The call will be webcast live over the internet from the Company's website at under “Investor Relations”. Participants should follow the instructions provided on the website for downloading and installing the audio applications necessary to join the webcast. Interested individuals also can access the live conference call via telephone at 866-383-8119 (domestic) or 617-597-5344 (international) and entering passcode 46965557.

Following the live webcast, a replay will be available at the same URL on the Company's website for 7 days. A telephonic replay will also be available approximately two hours after the call and can be accessed by dialing 888-286-8010 (domestic) or 617-801-6888 (international) and entering passcode 54878133. The telephonic replay will be available for seven days.

About Cloud Peak Energy™

Cloud Peak Energy Inc. (NYSE:CLD) is headquartered in Wyoming and is the third largest coal producer 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 1,500 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.


Cloud Peak Energy Inc.
Karla Kimrey, 303-713-5000
Vice President, Investor Relations

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