Machines which completely free the mineral from the seam

Introduced: September 1968

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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E21C 27/01 specially adapted for removing overhanging coal IPC+CPC Available in IPC and CPC
E21C 27/02 solely by slitting (rods, drums, for same E21C25/10; saws, discs, wheels E21C25/18; chains, chain guides, for same E21C25/28) IPC+CPC Available in IPC and CPC
E21C 27/10 by both slitting and breaking-down IPC+CPC Available in IPC and CPC
E21C 27/18 by both slitting and planing IPC+CPC Available in IPC and CPC
E21C 27/20 Mineral freed by means not involving slitting IPC+CPC Available in IPC and CPC