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The Subsurface Group is a Houston, TX-based company in the Energy and Utilities sector.
Saco Petroleum Inc is a Kansas City, MO-based company in the Energy and Utilities sector.
Production Enhancement Group, Inc., a Houston-based energy services company incorporated in Alberta, Canada, rades on the TSX under the symbol WIS.
Rineco Chemical Industries is a Benton, AR-based company in the Energy and Utilities sector.