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JCO (company)

From Wikipedia, the free encyclopedia

JCO is a Japanese nuclear fuel cycle company established in October 1979 as a wholly owned subsidiary of Sumitomo Metal Mining Co., Ltd. as Japan Nuclear Fuel Conversion Co. 日本核燃料コンバージョン (Nihon Kakunenryō Konbājon). As of 2000, stock capitalization was US$1 billion.


  • 1979 JCO was founded
  • 1980 Sumitomo Metal Mining Co., Ltd. conversion activities were handed over to JCO
  • 1983 The second factory building at Tokaimura was completed
  • 1998 The name was changed to just JCO
  • 1999 Tokaimura nuclear accident
  • 2003 Uranium conversion activities stopped