首页 > Term: drop-shaft method
drop-shaft method
This sinking system consists in the use of a cutting shoe on the bottom of a shaft lining that is being continually augmented as the shoe descends, the material inside the lining being excavated.
- 词性: noun
- 行业/领域: 采矿
- 类别 一般矿业; Mineral mining
- Government Agency: USBM
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创建者
- ed.young
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(Milwaukee, United States)