CONTACT: the meeting of two geologic formations.
CONTACT VEIN: a vein along the contact.
COUNTRY ROCK: rock surrounding a vein or lode, extending throughout the area.
CRIBBING: a wall of light timbering between heavy supports at either vertical or horizontal mine working.
CROSSCUT: a horizontal opening such as an adit driven across the vein or ore body.
CUT: an open working driven into a hillside to expose underlying rock.
DIKE: a vertical or near vertical fissure filled with volcanic rock.
DIP: the vertical angle a vein or sedimentary bed makes with a horizontal plane.
DRIFT: a horizontal opening (such as an adit) driven along the vein.
FACE: the last working end of an adit, drift, crosscut or cut (same as breast).