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November 1, 2010

Did Cement Or Concrete Fail In Oil Well?

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Was it "cement," as NPR has been reporting, or "concrete" that failed at the bottom of the BP well, causing millions of gallons of oil to be released into the Gulf of Mexico? Some listeners have written letters to ask. NPR Science Correspondent Richard Harris joins Melissa Block to explain the answer.

nancy pelosi harry reid john mccain al gore bill clinton

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