ホーム > Term: proving the area
proving the area
The establishment of the quantity and grade of coal or ore available for working by means of geological surveys, exploratory drilling, or exploring headings.
- 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
0
作成者
- ed.young
-
(V.I.P) 21084 ポイント - 100% positive feedback
(Milwaukee, United States)
