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Madagascar Oil SA is an oil company operating in Madagascar.
ExxonMobil is a multinational oil and gas corporation engaged in the exploration, production, transportation, and sale of crude oil and natural gas, as well as the manufacture and sale of petroleum products and petrochemicals.
Frontier Refining and Marketing is a Denver, CO-based company in the Energy and Utilities sector.
Williams is one of America`s leading energy infrastructure companies, dedicated to developing and empowering its employees. We are focused on connecting North America`s significant hydrocarbon resource plays to growing markets for natural gas and natural gas liquids. Our interstate gas pipeline and gathering & processing operations span the United States, including strategic assets in the deepwater Gulf of Mexico, the Rockies, the Pacific Northwest and the Eastern Seaboard.