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a. A vein or bed of earth or stone, that prevents miners from following a
vein of ore; a large block. Fay
b. A projecting columnar part (as of a masonry wall) or mass (as of ore).
Webster 3rd
c. A vertical structural member forming the side of an opening in a
furnace wall. Harbison-Walker
d. A type of brick shape intended for use in the sides of wall openings.
Harbison-Walker
e. Sidewall of port of furnace superstructure carrying port crown load.
ASTM
Source:
Dictionary of Mining, Mineral, and Related Terms
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