Mark S. Sexton

Evergreen Resources, Inc., located below the Western prairies and below the Rocky Mountains and the waters of the Gulf of Mexico. The exploration and production company, which has boosted its Gulf of Mexico properties, holds proved reserves oil equivalent. The vast majority of the exploration and production company's reserves are found within the US.

Evergreen Energy, Inc. operates as a business intelligence and environmental solutions company. It engages to the development of accurate and reliable technologies. Its products are focused on helping customers manage the costs and operational issues. The company was founded in 1984 and is headquartered in Denver, CO.

Pioneer Natural Resources Co. operates as an independent oil and gas exploration and production company. The firm engages in hydrocarbon exploration in the Cline Shale. It focuses on the operation of the Permian Basin, Eagle Ford Shale, Rockies, and West Panhandle projects. The company was founded by Scott Douglas Sheffield on April 2, 1997, and is headquartered in Irving, TX.

The Independent Petroleum Association of America manufactures oil and natural gas. The non-profit company is based in Washington. Barry Russell has been the CEO of the American company since 1980.

Western Energy Alliance is a nonprofit trade association based in Denver, CO, representing 300 companies engaged in environmentally responsible exploration and production of oil and natural gas in the west. The company believes in the principle of multiple use of non-park, non-wilderness public lands and has consistently stressed the importance of public lands advocacy over many years. The company is an advocacy organization promoting the best practices in the industry.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

Colorado Oil & Gas Association engages in the exploration and production of oil and gas. The private company is based in Denver, CO. The company was founded by Anthony W. Sharp. Dan Haley has been the CEO of the company since 2015.

Energy Outreach Colorado provides energy assistance programs. It also provides grants to housing organizations, multi-family residences, and non-profit facilities to pay for energy efficiency upgrades such as insulation, efficient lighting and energy star appliances. The company founded in 1989 and is headquartered in Denver, CO.

The Colorado Museum of Natural History provides informal science education. It offers exhibits, discussions, and activities to help Museum visitors celebrate and understand the wonders of Colorado, earth, and the universe. The company was founded by Edwin Carter in 1868 and is headquartered in Denver, CO.