NEW YORK, Dec. 5, 2012 /PRNewswire/ -- Tripp Levy PLLC, a leading national securities law firm, is investigating potential claims against the Boards of Directors of Freeport-McMoRan Copper & Gold Inc. ("Freeport") (FCX), McMoRan Exploration Co. ("McMoRan") (MMR), and Plains Exploration & Production Co. ("Plains") (PXP) concerning Freeport's
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