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crab operator
In bituminous coal mining, one who maintains and operates a crab (electric motor equipped with a drum and haulage cable mounted on a small truck) to pull loaded mine cars from working places to haulageways in the mine.
- 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)