What is (a) Solid coal on the side of a gallery; solid ore in a vein. (b) An elongated pillar of ore or coal left as a support. Raymond called?
rib — (Mining) (a) Solid coal on the side of a gallery; solid ore in a vein. (b) An elongated pillar of ore or coal left as a support. Raymond. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00