慶應義塾大学 商学部・商学研究科

新保一成 研究室

開発と環境の経済分析...

NIC 1998 - code 120

Structure

Hierarchy

  • Section: C - Mining and quarrying
  • Divsion: 12 - Mining of uranium and thorium ores
  • Group: 120 - Mining of uranium and thorium ores(e.g. pitchblende), including concentrating of such ores

Class

  • 1200 - Mining of uranium and thorium ores(e.g. pitchblende), including concentrating of such ores

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