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| Bryan Research & Engineering A fully-integrated energy company, production, marketing, refining , including exploration, transportation, it is active in 40 countries and involved in every aspect of the oil and gas industry and power. |   |
| Occidental Petroleum Petroleum refiner and exploration, oxyvinyls, chemical division provides chlorine, caustic soda and derivatives as well as specialty chemicals. |   | |
| Barnes & Cick, Inc. International engineering and management consulting firm serving the oil and gas industry, natural gas processing, experienced in petroleum refining and petrochemicals. |   | |
| Conoco A fully-integrated energy company, production, marketing, refining , including exploration, transportation, it is active in 40 countries and involved in every aspect of the oil and gas industry and power. |   | |
| Muse, Stancil & Co. Offers energy consulting services focusing on the identification and development of opportunities, and on problem solving associated with processing, transportation and marketing of hydrocarbons. |   | |
| Energy Service Investment Natural gas exploration, transportation, production, construction, storage and distribution and distribution, as well as energy savings and related consulting services. |   | |
| Dominion Energy Holding company with interests in electric generation, transmission, distribution and marketing; natural gas and oil production and marketing. |   | |
| Shell Oil They also purchase, manufacture, transport and market oil and chemical products and provide technical and business services. Explore, develop, produce, purchase, transport and market crude oil and natural gas. |   | |
| Equitable Resources Inc. Natural gas exploration, transportation, production, construction, storage and distribution and distribution, as well as energy savings and related consulting services. |   | |
| Norwegian Petroleum refiner and exploration, oxyvinyls, chemical division provides chlorine, caustic soda and derivatives as well as specialty chemicals. |   | |
| Dow Gas Treating: Natural Gas Production Increase gas production, reduce solvent consumption, improve performance, lower corrosion rates |   | |
| Kinder Morgan Operates natural gas and petroleum pipelines and storage, gathering, along with retail distribution, marketing and electric generation assets. |   | |
| Kuwait National Petroleum Company Kuwait-owned oil refinery, gas liquefication and petroleum products distribution company. |   | |
| Koch Industries A diversified energy company involved in all aspects of the energy industry: petroleum, mineral services, gas liquids, chemical technology, chemicals and financial services. |   | |
| Aeropress Corporation International engineering and management consulting firm serving the oil and gas industry, natural gas processing, experienced in petroleum refining and petrochemicals. |   | |
| Dynegy Marketer of energy products and services to customers primarily in North America and the United Kingdom. |   | |
| Statoil Involved in the exploration, transport, production and marketing of petroleum and petroleum-derived products in Scandinavia. |   | |
| Texaco Finds and produces oil and natural gas; manufactures and markets fuels and lubricants; operates trading, transportation and distribution facilities; and produces alternate forms of energy. |   | |
| USX-Marathon Group USX Corporation, is a major worldwide producer of oil and natural gas, with headquarters in Pittsburgh and the nation's largest producer of steel products. |   | |
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