ホーム > Term: head coal
head coal
(Scotland) Formerly, the stratum of a coal next to the roof. More usually now, the top portion of a coal seam when left unworked, either permanently or afterwards taken down; the top coal on a loaded wagon.
- 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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(V.I.P) 21084 ポイント - 100% positive feedback
(Milwaukee, United States)
