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Jaco Oil Company is a management company the provides support for a variety of operating companies in several different industries. The Company is privately owned and focused on the management of companies owned by the family.
Avalon Petroleum is a Antioch, IL-based company in the Energy and Utilities sector.
Tana Exploration & Production is a Spring, TX-based company in the Energy and Utilities sector.
Howard Concrete Co is a Glen Ellyn, IL-based company in the Energy & Utilities sector.
Tec Well Service Inc. is one of the leading companies in the Energy & Utilities sector.