FILE - This April 21, 2010 aerial photo taken in the Gulf of Mexico more than 50 miles southeast of Venice on Louisiana's tip shows the Deepwater Horizon oil rig burning. Retired Coast Guard Adm. Thad... more 
FILE - This April 21, 2010 aerial photo taken in the Gulf of Mexico more than 50 miles southeast of Venice on Louisiana's tip shows the Deepwater Horizon oil rig burning. Retired Coast Guard Adm. Thad Allen, the federal government's point man on the disaster, said Sunday, Sept. 19, 2010, BP's well "is effectively dead." A permanent cement plug sealed BP's well nearly 2.5 miles below the sea floor in the Gulf of Mexico, five agonizing months after an explosion sank a drilling rig and led to the worst offshore oil spill in U.S. history. less 
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Associated Press | Photo By Gerald Herbert, File
Tue, Sep 21, 2010 1:02 AM EDT