Robert C. van Cleave

Clark Construction Group LLC provides construction services. It offers preconstruction, construction management, general contracting, trade work, design, and consulting services. The firm builds office complexes, hotels, airport terminals, correctional facilities, manufacturing facilities, water treatment plants, highways, bridges, and high-rise apartments. The company was founded in 1906 and is headquartered in Bethesda, MD.

Balfour Beatty Construction, Inc. (BBCI), the North American civil engineering arm of UK-based Balfour Beatty plc, provides heavy construction and civil engineering services. One of the top bridge and highway contractors in the US, it works primarily in California, Texas and the eastern US. The company has worked on the San Mateo-Hayward Bridge and the Golden Gate Bridge in California and is involved in cleaning Narragansett Bay by upgrading sewer systems in Rhode Island. Founded in 1990, the firm is located in Atlanta, GA.

Transportes Aereos del Continente Americano owns and operates airlines. It connects North and South America with Central America through three hubs: San Jose, San Salvador and Lima. The company was founded in 1931 and is headquartered in San Salvador, El Salvador.

Dallas-based Centex Corporation (NYSE: CTX), founded in 1950, is a home building company. Centex Homes operates in major U.S. markets in 25 states and delivered more than 33,000 homes in the United States in its most recent fiscal year ended March 31, 2005. Its leading brands include Centex Homes, Fox & Jacobs Homes and Centex Destination Properties. The company, which handles commercial construction chores for parent Centex Corporation, offers start-to-finish project management and construction services, including site evaluation and analysis, general contracting, cost consulting, process equipment installation, turnkey medical facility development, capital equipment planning, and closeout services. Typical projects include such facilities as hotels, office buildings, civic centers, airports, hospitals, industrial facilities, schools, public buildings, and retail locations.

Balfour Beatty Rail, Inc. provides rail infrastructure construction and maintenance services. Its services include system engineering, construction, maintenance, track infrastructure, drainage, vegetation control, train control, communication systems, and electrification services. The company was founded in 2000 and is headquartered in Jacksonville, FL.

Museum of Nature & Science operates as museum. The company is headquartered in Dallas, TX.

Goodwill Industries (Santa Cruz, California) provided education, employment and job training services. The firm's services were collection and sale of clothing and household items. The company was founded in 1928 and was headquartered in Santa Cruz, CA.