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, today announced results for the second quarter and first six months of 2017. Highlights and Recent Developments Quarter Ended Year to Date (in millions, except per ton amounts) 06/30/17 06/30/16 06/30/17 06/30/16 Net income (loss) $ (6.9 ) $ 35.3 $ (27.1 ) $ (1.1 ) Adjusted EBITDA (1)