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.
i. A ridge, paralleling the long axis of a drill string member, that acts
as a wear-resistant surface. Long
Dictionary of Mining, Mineral, and Related Terms