FILE - This July 27, 2011 file photo shows an Exxon sign at an Exxon gas station in Carnegie, Pa. Exxon Mobil reports quarterly financial results on Friday, Oct. 31, 2014. (AP Photo/Gene J. Puskar, File)
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FILE - This July 27, 2011 file photo shows an Exxon sign at an Exxon gas station in Carnegie, Pa. Exxon Mobil reports quarterly financial results on Friday, Oct. 31, 2014. (AP Photo/Gene J. Puskar, File)
