TREA

characterised by the kind or composition of the backfilling material

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Industry

  • CPC
  • E21F15/005
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS E21F15/00Methods or devices for placing filling-up materials in underground workings

Current Industry

E21F15/005characterised by the kind or composition of the backfilling material
Industries