FILE - In this July 27, 2011 file photo, Range Resources site manager Don Robinson stands near the well head by the drill that goes into the shale at a well site in Washington, Pa. Energy companies and environmental groups are both wondering how President Barack Obama's reelection will impact the boom in shale natural gas drilling. (AP Photo/Keith Srakocic, File)

Associated Press
FILE - In this July 27, 2011 file photo, Range Resources site manager Don Robinson stands near the well head by the drill that goes into the shale at a well site in Washington, Pa. Energy companies and environmental groups are both wondering how President Barack Obama's reelection will impact the boom in shale natural gas drilling. (AP Photo/Keith Srakocic, File)
FILE - In this July 27, 2011 file photo, Range Resources site manager Don Robinson stands near the well head by the drill that goes into the shale at a well site in Washington, Pa. Energy companies and environmental groups are both wondering how President Barack Obama's reelection will impact the boom in shale natural gas drilling. (AP Photo/Keith Srakocic, File)
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