Nancy M. Fairchild

Southern Union Co. engages in gathering, processing, transportation, storage and distribution of natural gas in the United States. The firm operates through three reportable segments: transportation and storage, gathering and processing, and distribution. The company was founded by George Lindemann in 1929 and is headquartered in Houston, TX.

Luminex Corp. develops, manufactures and markets proprietary biological testing technologies and products with applications throughout the life sciences and diagnostics industries. The firm's products are focused on the molecular diagnostic testing market, which includes human genetics, personalized medicine and infectious disease segments. The company was founded by Mark B. Chandler and Van S. Chandler in May 1995 and is headquartered in Austin, TX.

Part of The Budd Group, Workforce Solutions, Inc. provides professional staffing, outsourced recruiting, and executive search services. The company is based in Charlotte, NC. Workforce Solutions was acquired by The Budd Group on March 31, 2004.

Esoterix, Inc. provides laboratory testing services. The company performs esoteric laboratory tests including testing for asthma, bleeding disorders, cancer, diabetes, and infectious diseases. The company was founded in 1995 and is headquartered in Austin, TX.

Electric Reliability Council of Texas, Inc. operates and regulates power transmission system. Its services include account management services and market support services. The company was founded in 1970 and is headquartered in Austin, TX.

Energyworx BV provides data management, information technology, and services. It offers instant and real-time access with limitless storage and computing power. The company was founded by Erik van Wijk and Edwin Poot and is headquartered in Houten, the Netherlands.