A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Long tunnels make extensive dip workings self-draining
Water from adjacent mines led to a common discharge; flooded part of one mine caved to workings below; old shafts utilized; gravity makes drainage positive.
Long tunnels make extensive dip workings self-draining
Water from adjacent mines led to a common discharge; flooded part of one mine caved to workings below; old shafts utilized; gravity makes drainage positive.
Long tunnels make extensive dip workings self-draining
Coal Age
Kneeland, F.H. (author)
Coal Age ; 28
1925
3 pages
5 Figs.
Article (Journal)
English
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