A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract of paper read before the Coal Min. Inst. of Am. Discusses possible substitutes for ordinary wood props. (4000 w.) (No. 53937 A)
Abstract of paper read before the Coal Min. Inst. of Am. Discusses possible substitutes for ordinary wood props. (4000 w.) (No. 53937 A)
Mine roof supports
Col Engr
Smith, H.I. (author)
1914
Ills.
Article (Journal)
English
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Development of Lightweight Mine Roof Supports
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Steel and timber roof supports for mine entries
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