Chicago, IL -  Fort Dearborn Advisors closed on the sale of substantially all operating assets of Mackson, Inc., a subsidiary of MetalTek, Inc. to Tioga Holdings, Inc.  Mackson is a leading provider of nuclear grade fasteners, structural steel, pipe, fittings, weld wire and ASME code certified fabricated components to the nuclear power industry.  Fort Dearborn conducted a robust sales process yielding multiple indications of interest and, ultimately, an acquirer who met the owner's objectives.