A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Consideration is confined entirely to known action at working face of strata immediately over coal seam; caving and subsiding methods of roof action; examples of roof conditions and pillar recovery are submitted to show three general methods of roof support in pillar recovery.
Consideration is confined entirely to known action at working face of strata immediately over coal seam; caving and subsiding methods of roof action; examples of roof conditions and pillar recovery are submitted to show three general methods of roof support in pillar recovery.
Roof action in pillar recovery
Min. Congress Jl
Southward, G.B. (author)
1931
2 pages
6 Figs.
Article (Journal)
English
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