TREA

Shafts not provided for in groups E21D1/00 - E21D7/00

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Industry

  • CPC
  • E21D8/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS

Current Industry

E21D8/00Shafts not provided for in groups E21D1/00 - E21D7/00
Industries