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Mississippi River oil spill: why Yazoo turn is treacherous

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The location of the accident represents “one of the two most difficult turns in the Mississippi River” because, when moving downstream, operators have to make a hard right, which exposes them to currents from the Yazoo, says Kavanaugh Breazeale, a spokesman for the US Army Corps of Engineers in Vicksburg. Contributing to the danger are underwater pylons supporting two bridges – one for rail cars and a second for Interstate 20 – which are separated by less than a tenth of a mile.

Navigating the Mississippi is often treacherous due to changes in elevation, cross currents from intersecting waterways, and the increasing number of barges in a single tow, which could extend to as many as 40, says Marty Lipinski, director emeritus of the Intermodal Freight Transportation Institute at the University of Memphis.

“These are enormous structures moving down the river. These pilots are highly skilled people who sometimes have to put a thread through the needle to maintain navigation of these large tows within the channels,” Mr. Lipinski says.

Last February, two barges spilled about 10,000 gallons of oil after a collision about 50 miles upriver from New Orleans. In 2008, about 300,000 gallons of oil escaped near New Orleans after a similar collision between a barge and a tanker.

Recovery operations are ongoing. Jonathan Lally, a spokesman for the US Coast Guard Eighth District based in New Orleans, could not confirm the rate at which the oil was spilling, but described the discharge as a “slow leak.” Mr. Lally says besides recovery operations, which include 2,800 feet of boom, the Coast Guard is working to transfer the oil from the vessel to another to salvage the damaged barge.

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