A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experiments with roof bolting to prove adaptability of roof bolting, and to determine possible cost savings; geologic conditions difficult; it is concluded that bolting is effective where anchorage can be obtained in stratum that has not flexed to any extent; placing bolts before collaring of openings has reduced overbreak and timber requirements; fire hazards reduced; maintenance costs are lower.
Experiments with roof bolting to prove adaptability of roof bolting, and to determine possible cost savings; geologic conditions difficult; it is concluded that bolting is effective where anchorage can be obtained in stratum that has not flexed to any extent; placing bolts before collaring of openings has reduced overbreak and timber requirements; fire hazards reduced; maintenance costs are lower.
Roof bolting at United States and lark mine
Min Congress J
Boyd, B. (author)
1952
Article (Journal)
English
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| Engineering Index Backfile | 1950
| Engineering Index Backfile | 1950
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| Engineering Index Backfile | 1953