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a. A mineral veinlet or filament, usually one of a number, occurring in a
discontinuous subparallel pattern in host rock. See also: stringer lode AGI
b. A thin layer of coal at the top of a bed, separating in places from the
main coal by material similar to that comprising the roof.
c. A heavy timber or plank, usually horizontal but sometimes inclined,
supporting other members of a structure; also, the horizontal crosspiece
in square set timbering.
d. See: roof stringer
Source:
Dictionary of Mining, Mineral, and Related Terms
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