Associated Press
FILE - In this Sept. 19, 2012 file photo, a barge eases southbound in a Mississippi River channel toward a lock that remained shut down in Granite City, Ill., causing a traffic jam of dozens of tugboats and hundreds of barges. That same site was the scene of a 17-hour shutdown Tuesday, Jan. 22, 2013, after a barge got caught up in and damaged an auxiliary lock. A key stretch of the Mississippi River reopened to shipping Wednesday 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. (AP Photo/Jim Suhr, File)

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