Robert Doyle McGrew

T.D. Williamson, Inc. provides pipeline equipment and services. The firm designs, manufactures, and maintains oil field machinery and systems including pipeline pigging, gas leak detection, pipeline inspection, plugging, tapping, valve, clamp, and catholic protection equipment. It offers general pipeline, training, and turnkey services. The company was founded by Robert D. McGrew in 1920 and is headquartered in Tulsa, OK.

T.D. Williamson Norway AS provides repair & engineering services to the petroleum industry. The company was founded in 2005 and is headquartered in Stavanger, Norway

Tulsa Area United Way provides social services. It works to advance the common good by focusing on the three building blocks of a better quality of life - education, health/safety and financial stability. The company recruits people and organizations from across the community who bring the passion, expertise and resources needed to get things done. The company was founded in 1924 and is headquartered in Tulsa, OK.

TDW Offshore Services AS offers engineering services, repairs, and activities related to the petroleum industry and plumbing activities. It provides oil and gas pipeline installation and maintenance services for onshore and offshore applications. The company was founded on May 5, 1998 and is headquartered in Stavanger, Norway.