Exxon Mobil

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Gas prices at an Exxon Mobil station at New York Avenue and Bladensburg Road in Northeast Washington and elsewhere rapidly continue their upward march. (Andrew S. Geraci/The Washington Times)

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Iraq's Prime Minister Nouri al-Maliki (seen here) and ExxonMobil Chairman and CEO Rex Tillerson met Monday in Baghdad, possibly signaling a resolution of the country's dispute with America's largest oil company. (Associated Press)

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**FILE** Steam rises from towers at an Exxon Mobil refinery in Baytown, Texas, on April 16, 2010. (Associated Press)

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**FILE** The headquarters of ExxonMobil is seen in Brussels on Oct. 26, 2012. (Associated Press)

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ConocoPhillips CEO James Mulva (left) and ExxonMobil CEO Rex Tillerson gather their things on Capitol Hill in Washington on Thursday, May 12, 2011, after testifying before the Senate Finance Committee. (AP Photo/Alex Brandon)