FILE - In this April 15, 2009 file photo, the Halliburton sign adorns the side of a machine being used by the company at a site for natural-gas producer Williams in Rulison, Colo. Halliburton said Monday, April 19, 2010, its first-quarter profit slumped nearly 46 percent with the industry still recovering from last year's drop in oil drilling.(AP Photo/David Zalubowski, File)