FILE - Workers move a section of well casing into place at a Chesapeake Energy natural gas well site near Burlington, Pa., in Bradford County, on April 23, 2010. (AP Photo/Ralph Wilson, File)
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FILE - Workers move a section of well casing into place at a Chesapeake Energy natural gas well site near Burlington, Pa., in Bradford County, on April 23, 2010. (AP Photo/Ralph Wilson, File)
