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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.
Counseling and Educational Consulting is a Miami, FL-based company in the Energy and Utilities sector.
DeGolyer and MacNaughton is a Dallas, TX-based company in the Energy and Utilities sector.
Briner Oil Co is a Jonesville, MI-based company in the Energy and Utilities sector.
L D Drilling Co is a Great Bend, KS-based company in the Energy and Utilities sector.