BACK: the roof of a horizontal opening such as an adit, drift or crosscut.
BONANZA: a rich body of ore.
BEDROCK: uppermost layer or segment (portion) of rock in place.
BREAST: the end, heading or working face of an adit, drift or crosscut.
CHIMNEY: a vertical ore body, tubelike in shape.
CHUTE: (ore) chute for transferring broken rock in a mine; usually from a stope to a haulage passage.
COBBING: hand sorting of ore.
COLLAR: top of a shaft or winze; the timbers or concrete at the upper end.
COLOR: a particle of free gold.
CONCENTRATOR: a device for separating and concentrating mineral from rock by mechanical means.