11
FILE PHOTO: Oil mixed with water from an oil spill
FILE PHOTO: Oil mixed with water from an oil spill along the Yellowstone River is pictured in Laurel, Montana, July 6, 2011. REUTERS/John Warner/File Photo
FILE PHOTO: Oil mixed with water from an oil spill along the Yellowstone River is pictured in Laurel, Montana, July 6, 2011. REUTERS/John Warner/File Photo