a. The side of a pillar or the wall of an entry. BCI
b. The solid coal on the side of a gallery or longwall face; a pillar or barrier of coal left for support.
c. The solid ore of a vein; an elongated pillar left to support the hanging wall in working out a vein.
d. A stringer of ore in a lode.
e. The termination of a coal face. Where solid coal is left, the term fast rib, end, or side, is used; and where the coal face ends at the gob, the term used is loose rib, end, or side. TIME
f. See: buttock
g. A hard zone, bed, or horizon within a formation; a silicified zone in a sedimentary stratum. Long
h. A ridge projecting above grade in the floor of a blasted area. Nichols, 1
i. A ridge, paralleling the long axis of a drill string member, that acts as a wear-resistant surface. Long
Source: Dictionary of Mining, Mineral, and Related Terms












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