Last week Hitachi Zosen announced it would acquire nuclear technology provider NAC International from USEC in a deal valued at $45 million.Norcross, Ga.-based NAC engineers and sells equipment for storing and moving nuclear material. USEC, a Maryland-based uranium-enrichment company, has owned NAC since 2004 and agreed to sell it to the Japanese firm's HITZ Holdings U.S.A. subsidiary in a competitive sale process, according to releases from the companies involved.NAC holds multiple licenses from the Nuclear Regulatory Commission for spent-fuel equipment – such as the Magnastor dry cask – and Mitsubishi Zosen has manufactured containers for the company since the late 1980s. The Georgia company employs about 70 people.Through its subsidiaries, Hitachi Zosen runs a number of businesses in waste management, energy and heavy industry. It is unrelated to boiling water reactor manufacturer GE-Hitachi.