Cloud Peak Energy Inc. is a producer of coal in the United States of America and the Powder River Basin (PRB). In the PRB, the Company owns and operates three surface coal mines: the Antelope Mine, the Cordero Rojo Mine and the Spring Creek Mine. Its segments include Owned and Operated Mines, and Logistics and Related Activities. Its Owned and Operated Mines segment includes its Antelope Mine, Cordero Rojo Mine, and Spring Creek Mine. The Logistics and Related Activities segment includes the services it provides to its international and certain of its domestic customers where it delivers coal to the customer at a terminal or the customer's plant or other delivery point, remote from its mine site. As of December 31, 2016, the Company also operated two development projects, both located in the Northern PRB: Youngs Creek Project and Big Metal Project. The Company's Antelope Mine and Cordero Rojo Mine are located in Wyoming and its Spring Creek Mine is located in Montana.