T William Porter III

Porter & Hedges, L.L.P. Mr. Porter has served as a director since March 2004. He is the Chairman and a founding partner of Porter & Hedges, L.L.P., a Houston law firm formed in 1981. Mr. Porter also serves as a director of Copano Energy L.L.C., a midstream energy company with networks of natural gas gathering and intrastate transmission pipelines in the Texas Gulf Coast and Oklahoma mid-continent regions, and U.S. Concrete, Inc., a value-added provider of ready-mixed concrete and related products and services to the construction industry in several major markets in the United States. Mr. Porter graduated with a B.B.A. in finance from Southern Methodist University in 1963 and received his law degree from Duke University in 1966.