A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Mine safety board decision 28: safety catches and arresting devices for cages, skips, and cars in mine shafts and slopes
Text of official recommendation as to devices designed to prevent falling of cages, skips or cars if rope, or other connections break; no definite specifications for such devices submitted.
Mine safety board decision 28: safety catches and arresting devices for cages, skips, and cars in mine shafts and slopes
Text of official recommendation as to devices designed to prevent falling of cages, skips or cars if rope, or other connections break; no definite specifications for such devices submitted.
Mine safety board decision 28: safety catches and arresting devices for cages, skips, and cars in mine shafts and slopes
U S Bur Mines -- Information Cir
1938
2 pages
Report
English
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Testing safety catches on mine cages at some eastern bituminous coal mines
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Mine safety decision 27, by mine safety board
Engineering Index Backfile | 1935