21 - 24 of about 24

• 21.

  Japanese Committee for Rock Mechanics (JCRM) , 2017.08 - 2024.09

• 22.

  The Mining and Materials Processing Institute of Japan (MMIJ) , 2016.04 - 2019.03

• 23.

  Japanese Committee for Rock Mechanics (JCRM) , 2015.11 - 2017.03

• 24.

  Hokkaido Association for the Preservation of the Environment thorough Technology , 2013.01 - 2019.03

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