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HKN or Harken Oil & Gas is a Southlake, TX-based company in the Energy and Utilities sector.
Sunoco Inc. is an American petroleum and petrochemical manufacturer headquartered in Philadelphia, Pennsylvania, United States, formerly known as Sun Company Inc. (1886–1920 and 1976–1998) and Sun Oil Co. (1920–1976). Sunoco is one of the largest gasoline distribution companies in the United States, with Sunoco brand gasoline being sold in over 4,700 outlets spanning 26 states, just over a third hosting convenience stores.
Alvin Hollis Co is a South Weymouth, MA-based company in the Energy and Utilities sector.
Constellation Energy Partners is a Houston, TX-based company in the Energy and Utilities sector.
Allamon Tool Company is a Montgomery, TX-based company in the Energy and Utilities sector.