4. Boring or penetrating the earth
  5. Processes
  6. Boring with specific fluid

Pieter Barendsen

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Method and device for driving a tunnel

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

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Method of collecting dust during rock drilling and a dust collec

Boring or penetrating the earth – Processes – Boring with specific fluid
Patent

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Profile ID: LFUS-PAI-P-863336

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