EL PASO - El Paso Corporation provides natural gas and related energy products in a safe, efficient, dependable manner. We own North America’s largest natural gas pipeline system and one of North America’s largest independent natural gas producers.

MARINER ENERGY - Mariner Energy, Inc. is an independent oil and gas exploration, development and production company with principal operations in the Gulf of Mexico and the Permian Basin in West Texas. Our 237 Bcfe of proved reserves as of December 31, 2004 are approximately 64% natural gas and 36% oil and condensate.

MIRANT - Mirant is a competitive energy company that produces and sells electricity in the United States, the Caribbean, and the Philippines. Mirant owns or leases more than 18,000 megawatts of electric generating capacity globally. We operate an integrated asset management and energy marketing organization from our headquarters in Atlanta.

SHELL - Shell is a global group of energy and petrochemicals companies operating in more than 140 countries and territories. The aim of the Shell Group is to meet the energy needs of society, in ways that are economically, socially and environmentally viable, now and in the future.