Notes on practice of Maryland Bureau of Mines; photograph of scene of accident, taken as soon as possible after accident, is valuable aid in determining cause and learning state of affairs at time of accident; examples of photographic records, with description of place and circumstances of accident and recommendations as to future accident prevention practice.
Underground photography as aid to accident prevention
Mechanization
Mechanization ; 4 , n 6
1940
3 pages
Aufsatz (Zeitschrift)
Englisch
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