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grandpetroleum is a Calgary, AB-based company in the Energy and Utilities sector.
EnMark Services is a Dallas, TX-based company in the Energy and Utilities sector.
MCube Petroleum is a Seattle, WA-based company in the Energy and Utilities sector.
Rohrback Cosasco Systems Inc is a Santa Fe Springs, CA-based company in the Energy and Utilities sector.
Marathon Oil Corporation (NYSE: MRO) is an integrated international energy company engaged in exploration and production, oil sands mining, integrated gas, and refining, marketing and transportation.