ホーム > Term: rock contractor
rock contractor
In anthracite coal mining, one who contracts to mine rock, as distinguished from coal, at a certain price per ton or footage of advance.
- 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)
