Associated Press
FILE - In this Nov. 28, 2012 file photo, an empty barge, top, pulls along side a barge filled with soybeans as they prepare to switch places at an Archer Daniels Midland grain river terminal along the Mississippi River in Sauget, Ill. A key stretch of the Mississippi River reopened to shipping Wednesday, Jan. 23, 2013 after hasty repairs were made to a lock damaged by a barge, marking the latest victory for stewards of the drought-plagued waterway they have maneuvered to keep open. Barge operators have faced challenges for months on the drought-plagued river, including increasingly shallower water and a 17-hour shutdown, on Tuesday, Jan . 22, 2013, of a damaged lock upriver near Granite City, Ill. (AP Photo/Jeff Roberson, File)

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