In January 1998, McCraw (age 63) resigned after being diagnosed with bladder cancer and was replaced by former Shell Oil President, Philip J. Carroll. That same year, IT Group purchased a 54 percent interest in Fluor Daniel GTI, Fluor's environmental division, for $36.3 million. Two years later, the coal mining operation under the A.T. Massey Coal Co. name (part of St. Joe) was spun off into its own business. In 2001, Fluor's four primary subsidiaries were consolidated into a single Fluor Corporation. In 2002 Alan Boeckmann was appointed as the CEO, followed by David Seaton in 2011. In 2005, Fluor's headquarters were moved to the Las Colinas area in Irving, Texas.