TREA

by a single chain guided on a frame with or without auxiliary slitting means

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Industry

  • CPC
  • E21C27/04
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C27/00Machines which completely free the mineral from the seam

Current Industry

E21C27/04by a single chain guided on a frame with or without auxiliary slitting means
Industries