Claude W. Thorp

CDI Corp. provides engineering, procurement, and construction management services. It offers workforce optimization, managed staffing programs, contingent staffing, and recruitment process outsourcing. The company was founded on September 16, 1950 and is headquartered in Houston, TX.

Whitehall Products LLC manufactures home and garden accent products. The firms’ home accent collection includes unique indoor, outdoor clocks and thermometers and personalized doormats. It offers weathervanes, architectural plaques and bird feeders. The company was founded in 1941 and is headquartered in Montague, MI.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

Hamilton Group provides consulting services to oil and gas exploration and production companies. The firm offers drilling, completion, production, engineering, geosciences, well site supervision, fluids management, and logistical support services. The company was founded in 1976 and is headquartered in Dallas, TX.

Sierra Hamilton LLC provides outsourced engineering, technology solutions, and on-site supervision services to the oil and gas industry. It offers drilling and completion, well control, and reservoir and production services. The firm operates through its locations in Denver, Houston, Lafayette, Midland, Oklahoma City, Pune, and Rio de Janeiro. The company was founded in December 2013 and is headquartered in Houston, TX.