Harry W. New

Willbros Group, Inc. engages in the provision of engineering and construction services to the oil, gas, refinery, petrochemical, and power industries. The company was founded by Miller Williams and David Williams in 1908 and is headquartered in Houston, TX.

Interstate Natural Gas Association of America operates as a not-for-profit organization. It specializes in the natural gas pipeline industry. The firm regulates the safety, environment, construction, economics, security, and operations of the industry. The company is headquartered in Washington, DC.

The Pipeline Contractors Association is a trade association located in the United States, specifically in Virginia. The association represents companies in the oil and gas pipeline construction industry. The PLCA provides legal and advocacy services to its members, with a focus on safety, quality, efficiency, training, environmental compliance, and community support. The association has a storied history, with representatives from 17 construction firms holding meetings in the late 1940s to anticipate the need for a safe underground system of transportation for natural gas, petroleum, and petroleum products.