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Associated Press
Pennsylvania Gov. Tom Corbett, right, greets President of Delta Air Lines Inc. Ed Bastian during a news conference in front of a ConocoPhillips refinery, Tuesday, May 1, 2012, in Trainer, Pa. Delta Air Lines Inc. Monday, said it will buy the refinery as part of an unprecedented deal that it hopes will cut its jet fuel bill. (AP Photo/Matt Rourke)

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