T. Boone Pickens, the self-made oil tycoon from Texas, died on Sept. 11 at the age of 91, according to his Twitter account.
He died of natural causes in his Dallas home with his family by his side, spokesman Jay Rosser said on the website.
Texas Oil Magnate T. Boone Pickens Dead at 91
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Energy magnate T. Boone Pickens in a stock photo Alex Wong/Getty Images
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