Leldon Echols

Crosstex Energy, Inc. engages in the gathering, transmission, processing and marketing of natural gas and natural gas liquids through its subsidiaries. It connects the wells of natural gas producers in the geographic areas of its gathering systems in order to gather for a fee or purchase the gas production, processes natural gas for the removal of natural gas liquids, transports and ultimately provides natural gas and natural gas liquids to a variety of markets. The company operates through three reportable segments consisting of Natural Gas Gathering, Processing and Transmission operations located in North Texas, Pipelines and Processing plants located in Louisiana and South Louisiana Processing and Natural Gas Liquid Assets. The Natural Gas Gathering, Processing, Fractonation and Transmission segment includes the drilling of wells into gas bearing rock formations and the pipelines receive natural gas from mainline transmission pipelines, processing plants and gathering systems. The Pipelines and Processing Plants segment includes on-system processing Plants. The South Louisiana Processing And Natural gas Liquid segment includes eunice processing plant and fractionation facility, riverside fractionation plant, cajun sibon pipeline system and napoleonville storage facility. The company was founded on April 28, 2000 and is headquartered in Dallas, TX.

Arthur Andersen LLP used to provide accounting services. It was also into consulting services for clients that operate businesses throughout the United States and around the world. Arthur Andersen was founded in 1913 and was headquartered in Chicago, IL.

Part of EnLink Midstream LLC, EnLink Midstream GP LLC explores for oil and gas and also provides oil pipeline transportation services. The private company is based in Dallas, TX. Barry E. Davis has been the CEO of the company since 2002.

The American Institute of Certified Public Accountants provides vocational education in accounting. The company provides services to the accounting community, regulatory bodies, and other organizations. It also operates in Jersey City, Washington, and Lewisville. It was founded in 1887 and is headquartered in New York City, NY.

HollyFrontier Corp. is an independent petroleum refiner and marketer. It specializes in gasoline, diesel fuel, jet fuel, and modified asphalt. The firm operates through the following segments: Refining, Lubricants and Specialty Products, and Holly Energy Partners LP (HEP). The Refining segment includes the operations in its El Dorado, Tulsa, Navajo, Cheyenne, and Woods Cross Refineries. The Lubricants and Specialty Products segment offers base oil production activities, by-product sales to third parties, and intra-segment base oil sales, which includes the purchase of base oils and the blending, packaging, marketing and distribution, and sales of finished lubricants and specialty products to third parties. The HEP segment relates to all of the operations of HEP. The company was founded in 1947 and is headquartered in Dallas, TX.

Baylor Health Care System Foundation provides community healthcare information services. The non-profit company is based in Dallas, TX.

Roofing Supply Group LLC distributes and markets roofing materials and related building products. It offers residential roofing, tile, decking, accessories and miscellaneous products, as well as hatches and specialty decorative stones for residential applications, and commercial roofing. The firm also provides fasteners, coatings, adhesives, equipment, gypsum, specialty decorative stones for commercial applications and contractors tools. It serves contractors, builders, architects and building owners. The company was founded in 1981 by Ronald J. Pugh and Vin Perella and is headquartered in Dallas, TX.