TREA

Ventilation of mines or tunnels Distribution of ventilating currents

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Industry

  • CPC
  • E21F1/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS

Current Industry

E21F1/00Ventilation of mines or tunnels Distribution of ventilating currents

Sub Industries

E21F1/003Ventilation of traffic tunnels E21F1/006Ventilation at the working face of galleries or tunnels E21F1/02Test models E21F1/04Air ducts E21F1/06Duct connections E21F1/08Ventilation arrangements in connection with air ducts E21F1/085using compressed gas injectors E21F1/10Air doors E21F1/12Devices for automatically opening air doors E21F1/14Air partitions Air locks E21F1/145Air locks E21F1/16Shaft covers E21F1/18Gravity flow ventilation
Industries