Mr. Nokes spent his 36-year career with ConocoPhillips, and retired in 2006 as Executive Vice President of worldwide Refining, Marketing, Supply and Transportation. His background primarily includes refining, marketing, crude and products trading, commercial natural gas operations and transportation. He also had assignments in exploration and production, as well as strategic planning. In 1991, he was appointed Vice President of U.S. Marketing and Product Trading. Beginning in 1994, he was Vice President of U.S. Downstream Business. For eight years beginning in 1999, he was Executive Vice President of Refining, Marketing, Supply and Transportation for the company's global business. Mr. Nokes was a member of the World Business Council for Sustainable Development and sat on the Board of Directors of the American Petroleum Institute, as well as the American Petroleum Institute Transportation, Marketing and Downstream Committees. Mr. Nokes is also a Director of Post Oak Bank, N.A., a Houston-based commercial bank.