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Page last updated at 06:51 GMT, Wednesday, 12 May 2010 07:51 UK

National Guard troops build oil barrier to protect coast

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Louisiana's National Guard has been preparing a makeshift barrier to keep oil away from fragile marshes.

Troops used helicopters and bulldozers to make an embankment, in a bid to limit environmental damage on the coast.

"The primary objective of building this embankment and closing this breach is to prevent the oil from coming through here to this estuary, which would occur a lot sooner than it would naturally," said Lieutenant Kyle Galloway.

Some 5,000 barrels (210,000 gallons) of oil a day have been gushing into the sea since an explosion destroyed the Deepwater Horizon drilling rig on 20 April.

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