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development engineer
In bituminous coal mining, one who operates a hoist to raise and lower workers, rock, and supplies during development work (sinking shafts and driving horizontal underground passages prior to the actual mining of coal from a seam).
- 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
- 100% positive feedback
(Milwaukee, United States)