Atlas Petroleum Exploration

Shell Oil Company is a leading oil and gas producer in the deep water Gulf of Mexico, a recognized pioneer in oil and gas exploration and production technology and one of America s leading oil and natural gas producers, gasoline and natural gas marketers and petrochemical manufacturers. The company operates in 50 states and employs more than 22,000 people delivering energy in technically innovative ways. As one of the largest providers of transport fuels, the company is committed to helping drivers use less energy and reduce emissions with advanced fuels and lubricants, leading the search for better biofuels and promoting government policies to reduce CO2 emissions from transport. In the United States, Shell is involved in the protection of the unique ecosystem of coastal Louisiana and has partnered with several local and national groups, such as America s Wetland Campaign, working to preserve the state's natural assets. It is an affiliate of the Shell Group, a worldwide group of energy and petrochemical companies that operate in more than 140 countries and territories. The Shell Group was started from an alliance made in 1907 between Royal Dutch Petroleum Company and The Shell Transport and Trading Company. Shell Oil Company maintains a location in Houston.

BHP Billiton Petroleum offers a range of services to the oil and gas industry in the United States. It staffs more than 1,500 employees and has operations in Houston in Texas. The company operates through exploration, development, production and marketing divisions. BHP Billiton Petroleum also maintains international locations in the United Kingdom, Pakistan and Singapore. The company is a part of BHP Billiton, which operates through several units. It manages BHP Billiton Iron Ore, which has operations in western Australia and Brazil. BHP Billiton also handles BHP Billiton Metallurgical Coal and BHP Billiton Manganese.