FILE - In this July 30, 2008, file photo, oil and gas developer T. Boone Pickens addresses a town hall meeting on energy independence in Topeka, Kan. Pickens, who amassed a fortune as an oil tycoon and corporate raider and gave much of it away as a philanthropist, has died. He was 91. Spokesman Jay Rosser confirmed Pickens' death Wednesday, Sept. 11, 2019.  (AP Photo/Charlie Riedel, File)