ホーム > Term: crop fall
crop fall
A caving in of the surface at the outcrop of the bed; caused by mining operations. Applied also to falls occurring at points not on the outcrop of the bed. Synonymous with day fall.
- スピーチの一部 noun
- 産業/ドメイン 炭鉱
- カテゴリ 炭鉱全般; Mineral mining
- Government Agency: USBM
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作成者
- ed.young
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(Milwaukee, United States)