Pamela Pierce

Scientific Drilling International, Inc. provides directional drilling and wellbore navigation, surveying and logging services. It also provides survey and steering, measurement and logging while drilling, production logging, ranging, directional drilling, wellbore navigation, and surveying and logging services. The company was founded in 1969 and is headquartered in Woodlands, TX.

Laredo Petroleum, Inc. is an exploration and production company with headquarters in Tulsa, Oklahoma. Laredo's strategy is to make strategic acquisitions and participate in drilling joint ventures having upside potential in the targeted area of the Mid-Continent and Permian Basin Regions of the United States. The company was founded in May 2007 and is headquartered in Tulsa, OK

Michael Baker International Holdco Corp. provides engineering and technical services to the industrial and government sectors. The company was founded by Michael Baker, Jr. in 1940 and is headquartered in Pittsburgh, PA.

Part of Arco Alaska, Inc., Arco Oil & Gas Co. is a private company that produces and sells oil and gas. The company is based in Plano, TX.

Vastar Resources, Inc. is one of the largest independent oil and natural gas exploration and production companies in the United States. The company is active in approximately 80 fields in some of the nation's most prolific producing areas, including the Gulf of Mexico, the Gulf Coast, the Oklahoma/Arklatex and the Rockies/Hugoton regions. In addition, the company's drilling rigs are exploring for new reserves both onshore and in the promising shelf and deepwater Gulf of Mexico drilling plays, the latter the site of rising industry activity and excitement.