홈 > Term: got-on-knobs
got-on-knobs
(South Staffordshire, England) A system of working thick coal, being a kind of bord-and-pillar plan, the main roadways being first driven to the boundary.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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