IRVING, TX � MARCH 14: An entrance to the ExxonMobil world headquarters located in Irving, Texas on March 14, 2014. ExxonMobil is the world's largest publicly traded international oil and gas company.
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IRVING, TX � MARCH 14: An entrance to the ExxonMobil world headquarters located in Irving, Texas on March 14, 2014. ExxonMobil is the world's largest publicly traded international oil and gas company.