a. The ignition of a heavy explosive charge. Syn:
b. A miner's term for compressed air underground. Nelson
c. Scot. A fall of water in the downcast shaft to produce or quicken
d. A suffix signifying a texture formed entirely by metamorphism.
e. The operation of increasing the diamond exposure on a bit face by
removing some of the matrix metal through the abrasive action of grains of
sand carried in a high-pressure stream of air. Also called sandblast.
f. An increase in firing temperature of a kiln immediately before ending
the firing operation.
g. The period during which a blast furnace is in blast; i.e., in
Dictionary of Mining, Mineral, and Related Terms