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St. Joe builds practical rock mechanics tools
Devices built by St. Joseph Lead Co to measure stope and development opening convergence, measurements that can indicate possible rock failure; stainless steel plug is basic component of permanent measuring stations; design and use of special cap screw, expansion shield, floor pin, and concrete insert.
St. Joe builds practical rock mechanics tools
Devices built by St. Joseph Lead Co to measure stope and development opening convergence, measurements that can indicate possible rock failure; stainless steel plug is basic component of permanent measuring stations; design and use of special cap screw, expansion shield, floor pin, and concrete insert.
St. Joe builds practical rock mechanics tools
Eng Min J
Reed, J.J. (author) / Mann, C.D. (author)
1961
7 pages
Article (Journal)
English
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