4. Cloud Peak Energy ( CLD) operates wholly owned coal mines Antelope, Cordero Rojo and Spring Creek Mine located in the Powder River Basin of Montana and Wyoming. The company sells sub-bituminous steam coal to domestic power utilities that generate almost 6% of electricity in the U.S. The company reported net income of $26.8 million for the first quarter of 2011, or 44 cents per share, as compared to $11.6 million, or 38 cents per share, in prior year's same quarter. Revenue was up 14.6% to $356.5 million from the first quarter of 2010. Production increased to 23.2 million from its three operated mines from 21.4 million tons in the first quarter of 2010. Coal production from Cloud Peak's three operated mines is estimated at 93 to 96 million tons with 90 million tons committed in fixed-price contracts. Additional operating margin guidance has been updated to range from $30 to $50 million from the earlier estimate of $20 to $35 million. Of the 15 analysts covering the stock, 47% recommend a buy and the remaining rate a hold. There are no sell ratings on the stock. A Bloomberg consensus expects an average 12-month price target of $26.57, which is 38.6% higher than the stock's current price.