Halbert S. Washburn

Rentech, Inc. supplies wood chips, wood pellets and nitrogen fertilizers. It owns patented technologies for synthetic fuels and power production. The firm owns the intellectual property including, patents pilot and demonstration data, and engineering designs for a number of clean energy technologies designed to produce certified synthetic fuels and renewable power when integrated with third-party technologies. It also owns a biomass and natural gas-to-synthetic fuels demonstration facility located in Commerce City, Colorado. The company was founded by Dennis L. Yakobson on December 18, 1981 and is headquartered in Los Angeles, CA.

Maverick Natural Resources LLC engages in the business of acquisition, exploitation, and development of oil and gas properties. Its assets consist of producing and non-producing crude oil, and natural gas reserves. The company was founded on March 23, 2006 and is headquartered in Houston, TX.

Part of Maverick Natural Resources LLC, BreitBurn GP LLC focuses on the acquisition, exploitation and development of oil and gas properties. The company is based in Los Angeles, CA. The company was founded by Randall Hart Breitenbach, Halbert S. Washburn. Halbert S. Washburn has been the CEO since incorporation.

Rentech Nitrogen Partners LP engages in the nitrogen fertilizer business. It operates through the East Dubuque and Pasadena segments. The East Dubuque segment involves operations of East Dubuque facility which produces ammonia and urea and ammonium nitrate (UAN). The Pasadena segment includes the operations of Pasedana facility that engages in the production of ammonium sulfate. The company was founded in 1965 and is headquartered in Los Angeles, CA.

Jones Energy, Inc. is an independent oil and natural gas company. It engages in the exploration, development, production, and acquisition of oil and natural gas. The company was founded by Jonny Jones in 1988 and is headquartered in Austin, TX.

Pacific Coast Energy Co. LP explores and develops onshore oil and gas properties. The firm's activities include interpretation to the drilling of exploration, development wells, and the construction of production facilities. The company was founded by Randall Hart Breitenbach and Halbert S. Washburn in 1997 and is headquartered in Orcutt, CA.