A tide of sludgy oil has begun washing into the fringes of Louisiana's coastal marshes, officials said Tuesday, as BP continued to siphon some of the oil gushing from a damaged well on the gulf floor but remained days away from trying to cap the leak.

Interior Secretary Ken Salazar told Senate committees Tuesday that the company would attempt a "dynamic kill" of the oil well Saturday. That procedure involves pumping thick mud into the well in hopes of blocking the oil.

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