홈 > Term: open end method
open end method
A method of mining pillars in which no stump is left; the pockets driven are open on the goaf side and the roof is supported on timbers.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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