Thomas F. Darden

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.

Part of Quicksilver Resources, Inc., Quicksilver Resources Canada, Inc. explores for, acquires, and provides crude oil and natural gas. The private company is based in Calgary, Canada. The Canadian company was founded by J. Michael Gatens, George W. Voneiff. Quicksilver Resources Canada was acquired by Quicksilver Resources, Inc. on August 26, 2000.

Crestwood Midstream Partners LP is a midstream master limited partnership engaged in the business of gathering and processing natural gas produced primarily from the Barnett Shale formation in the Fort Worth Basin in north Texas. The firm expects organic growth in its gathering and processing will come from Crestwood's increased volume of product transported, or throughput, to the system. The company also expects to attract third-party volumes from the Fort Worth Basin, which it believes is one of the fastest growing natural gas fields in the United States.

Part of Energy Transfer LP, Crestwood Gas Services GP LLC is a private company that processes natural gas and natural gas liquids. The company is based in Fort Worth, TX. Robert G. Phillips has been the CEO of the company since 2010. Crestwood Gas Services GP was acquired by Crestwood Equity Partners LP, a subsidiary of Energy Transfer LP from Crestwood Holdings Partners LLC on June 19, 2013 for $843.53 million.

Crestwood Midstream Partners LP owns, operates, acquires and develops midstream energy assets. It focuses on providing midstream infrastructure solutions for the substantial future development of North American shale and unconventional resource basins. Crestwood's operations include natural gas gathering, processing, treating and compression services for natural gas and natural gas liquids. Crestwood Midstream Partners LP owns, operates, acquires and develops midstream energy assets. It provides gathering, processing, treating and compression services for natural gas and natural gas liquids produced from some of the most prolific natural gas basins in North America including the Marcellus Shale, Granite Wash, Avalon Shale/Bone Spring, Barnett Shale, Fayetteville Shale, and Haynesville Shale. The company operates its business through following segments: Barnett, Fayetteville, Granite Wash and Marcellus. Crestwood Midstream Partners was founded in 2004 and is headquartered in Houston, TX.

Mercury Exploration Co. provides oil and gas exploration, drilling and production services. It operates in states such as Indiana, Kentucky, Michigan, Montana, New Mexico, Texas and Wyoming. The company was founded by Frank Darden in 1963 and is headquartered in Fort Worth, TX.

Quicksilver Production Partners LP owns and acquires oil and gas properties in North America. Its oil and gas reserves are located in the Barnett Shale. The company was founded in November 2011 and is headquartered in Fort Worth, TX.