ホーム > Term: barrier system
barrier system
N. of Eng. An approved method of working a colliery by pillar and stall, where solid ribs or barriers of coal are left in between working places.
- 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)
