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Associated Press
FILE - In this July 2, 2012, photo, tanker trucks take on loads of gasoline and diesel fuel at Arkansas Terminaling and Trading Inc., in North Little Rock, Ark., before making daily deliveries to retailers. Americans depend on energy for everything from driving their cars to powering factories, homes and offices _ and of course our smart phones, laptops and tablets. How that energy is produced and where it comes from affect jobs, the economy and the environment. (AP Photo/Danny Johnston, File)

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