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

Hans Lewer

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Prevention of self-ignition (spontaneous ignition) of coal throu

Fire extinguishers – Processes – Of preventing fire
Patent

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Process for lining tunnels

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

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Process for suppressing dust in mines

Mining or in situ disintegration of hard material – Processes – Mine safety
Patent

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Profile ID: LFUS-PAI-P-1292683

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