Rock blasting set on drought-plagued Mi

Rock blasting set on drought-plagued Miss. River
Associated Press

In this Dec. 12, 2012 photo provided by the United States Coast Guard, a line of towboats with fully loaded barges moves through the Chain of Rocks Canal near St. Louis, which allows operators to circumvent an impassable section of the Mississippi River. Barge operators along a key stretch of the Mississippi River braced Monday, Dec. 17, for months of restricted shipping as crews prepared to begin blasting large rock formations that are impeding navigation on the drought-plagued waterway. (AP Photo/United States Coast Guard, Colby Buchanan)

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