PITTSBURGH, April 12, 2013 /PRNewswire/ -- CONSOL Energy Inc. (NYSE: CNX), the leading diversified fuel producer in the Eastern U.S., is providing an operations update for the quarter ended March 31, 2013.CONSOL's Coal Division produced 14.8 million tons for the first quarter of 2013, including 1.3 million tons of low-vol coking coal from the
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