A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experience to date shows that mine roof sealing, where successful, is definitely beneficial in saving both material and labor.
Experience to date shows that mine roof sealing, where successful, is definitely beneficial in saving both material and labor.
Conserving labor by preventing roof falls
Min Congress J
Smith, F.G. (author)
1943
Article (Journal)
English
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Preventing accidents from falls of roof or coal
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