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Associated Press
A towboat pushes a barge through Lock & Dam 27 early Wednesday, Jan. 23, 2013, in Granite City. Ill. 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/St. Louis Post-Dispatch, Erik M. Lunsford)

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