Home > Term: pencil mark
pencil mark
(Australia) A thin bed of dark slate, about the thickness of the lead of a carpenter's pencil, that is parallel to the indicator.
- Μέρος του λόγου: noun
- Κλάδος/Τομέας: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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Δημιουργός
- ed.young
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(V.I.P) 21084 points - 100% positive feedback
(Milwaukee, United States)
