ExxonMobil contractors clean up oil along the banks of the Yellowstone River in Billings, Mont., Sunday, July 3, 2011. A company pipeline about 20 miles upriver near Laurel, Mont., ruptured and ... more 
ExxonMobil contractors clean up oil along the banks of the Yellowstone River in Billings, Mont., Sunday, July 3, 2011. A company pipeline about 20 miles upriver near Laurel, Mont., ruptured and spilled an estimated 1,000 barrels of crude into the Yellowstone on Saturday. (AP Photo/Matthew Brown) less 
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Associated Press | Photo By Matthew Brown
Sun, Jul 3, 2011 3:29 PM EDT