R D Cash

Chairman Emeritus since May 2003, and Board Director since May 1978, of Questar Corporation (Questar), an integrated natural gas company headquartered in Salt Lake City, Utah. Chairman of Questar from May 1985 to May 2003. Chief Executive Officer of Questar from May 1984 to May 2002 and President of Questar from May 1984 to February 1, 2001. Director of Zions Bancorporation since 1982 and Associated Electric and Gas Insurance Services Limited since 1993. Director of Texas Tech University Foundation since November 2002 and TODCO (The Offshore Drilling Company) since May 2004. Former trustee, until September 2002, of the Salt Lake Organizing Committee for the Olympic Winter Games of 2002.