TREA

Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence

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Industry

  • CPC
  • E21F17/185
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F17/00Methods or devices for use in mines or tunnels, not covered elsewhere

Current Industry

E21F17/185Rock-pressure control devices with or without alarm devices; Alarm devices in case of roof subsidence
Industries