Scientists have said that up to 20% more oil could gush out after underwater robots cut off the the pipe at the top of the blow out preventer but BP's managing director tried to downplay the potential increase Tuesday. The next operation is being called the Lower Marine Riser Package (LMRP).

"There will be a little bit more oil," Bob Dudley said on the CBS Early Show.

Harry Smith was incredulous. "Well, 20% is not insignificant if thousands and thousands of barrels of oil are pouring out of there," said Smith.

Dudley avoided Smith's point. "I think you will see that these containment domes will work. We have four of them on the site depending on how the cut is to be able to lift it down by the end of the week here," Dudley replied.

The federal government has said that the actual flow rate could be as high as 19,000 barrels per day. A 20% increase would mean an additional 3,800 barrels per day.

This video is from CBS's Early Show, broadcast June 1, 2010.

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