TREA

Methods of underground or surface mining Lay-outs therefor

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Industry

  • CPC
  • E21C41/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING

Current Industry

E21C41/00Methods of underground or surface mining Lay-outs therefor

Sub Industries

E21C41/04for hard coal E21C41/10for oil-bearing deposits E21C41/14for other specified minerals E21C41/16Methods of underground mining Layouts therefor E21C41/18for brown or hard coal E21C41/20for rock salt or potash salt E21C41/22for ores E21C41/24for oil-bearing deposits E21C41/26Methods of surface mining Layouts therefor E21C41/28for brown or hard coal E21C41/30for ores E21C41/31for oil-bearing deposits E21C41/32Reclamation of surface-mined areas
Industries