a. A powerful quarrying machine capable of cutting slots in stone at any angle. It is used for cutting dimension stone off the quarry face without explosives. See also: broaching Nelson
b. A machine that cuts a deep groove in rock, ordinarily to free dimension stone from the mass, or to make a smooth side for a canal or other excavation in rock. Cutting is accomplished by a group of reciprocating chisel-pointed bars, operated by steam or compressed air while the machine carrying them travels back and forth on a track. Ordinarily used only in the softer rocks, such as limestone, soapstone, or slate. Also called track channeler; bar channeler. Hess
Source:
Dictionary of Mining, Mineral, and Related Terms












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