New questions arise on dispersant use in oil spill
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BP inched closer to permanently sealing the blown-out oil well in the Gulf of Mexico as environmental officials defended themselves Sunday against assertions they allowed the oil giant liberal use of chemical dispersants whose threat to sea life remains unknown.
The Coast Guard routinely approved BP requests to use thousands of gallons of chemicals per day to break up the oil, despite a federal directive to use the dispersant rarely, congressional investigators said. (AP)
