Donald C. Vaughn

Houston Exploration Co. provides oil and gas exploration services on growing reserves & production through the exploration, development, exploitation and acquisition of natural gas. The company is located in Houston, TX.

Dresser Industries, Inc. was a supplier of products and services to industries involved in oil and gas production and transmission, petroleum refining and marketing and power generation. The petroleum products and services segment used to provide services and project management for oil and gas exploration, drilling, completion, production and transmission activities. In 1998, the company merged with its main rival, Halliburton, and is now known as Halliburton Co. On 10th April, 2001 the Dresser division (excluding the former Kellogg division) entered an agreement to separate itself once again from Halliburton by management purchasing its equity, the new company to be called Dresser, Inc. The company is headquartered in Dallas, TX.

Kellogg Brown & Root (Greenford) Ltd. provides commercial and heavy construction services. It offers to clients project services, from basic planning to design, materials and equipment procurement, construction and commissioning under a complete management system. The company was founded by Morris W. Kellogg in 1930 and is headquartered in Greenford, the United Kingdom.