4. Hydraulic and earth engineering
  5. Underground passageway, e.g., tunnel
  6. Lining

Shigeo Takamiya

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Method for constructing an enlarged tunnel and apparatus for for

Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent

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Shield machine

Mining or in situ disintegration of hard material – Hard material disintegrating machines – Stepper-type advance-causing means
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Profile ID: LFUS-PAI-P-1368435

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