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Webster Garner Oil & Propane Company is a Clio, MI-based company in the Energy and Utilities sector.
Shell Oil Company is the United States-based wholly owned subsidiary of Royal Dutch Shell, a transnational corporation "oil major" of Anglo-Dutch origins, which is amongst the largest oil companies in the world.
W.H. Thomas Oil Company is a Clanton, AL-based company in the Energy and Utilities sector.
Halliburton Company is an American multinational corporation. One of the worlds largest oil field service companies, it has operations in more than 70 countries.