Richard C. Buterbaugh

Kerr-McGee Corp. is an energy and inorganic chemical. It subsidiaries, joint ventures and other affiliates have operations throughout the world. The company core business, which include exploration, production of oil and gas resources. It was founded in 1929 and is headquartered Oklahoma City, Ok

Quicksilver Resources, Inc. was engaged in the acquisition, exploration, development and production of onshore oil and gas in North America. It operated through the Midstream and Exploration & Production segments. The Midstream segment provided natural gas gathering and processing services. The Exploration and Production segment focused on oil and natural gas industry. The company was founded in 1997 and was headquartered in Chester, OH.

Quicksilver Gas Services LP engaged in the business of gathering and processing natural gas produced primarily from the Barnett Shale formation.The company's assets include Cowtown Pipeline, and two natural gas processing facilities in Hood County, Texas, referred to as the Cowtown Plant and the Corvette Plant. KGS also owns a gathering system and a gas compression facility in eastern Tarrant County, Texas, referred to as the Lake Arlington Dry System.The company was founded in 2004 and is headquartered in Forth Worth, TX.

Laredo Petroleum, Inc. is an exploration and production company with headquarters in Tulsa, Oklahoma. Laredo's strategy is to make strategic acquisitions and participate in drilling joint ventures having upside potential in the targeted area of the Mid-Continent and Permian Basin Regions of the United States. The company was founded in May 2007 and is headquartered in Tulsa, OK