홈 > Term: overall concentration
overall concentration
The ratio of pithead output in tons (P) to length of main haulage roads in yards (L) or tons per yard of main haulage roads; i.e., P/L.
- 품사: noun
- 분야/도메인: 광업
- 카테고리: 일반 광산; Mineral mining
- Government Agency: USBM
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- ed.young
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