A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Safety inspections in and around iron mines in lake superior district
Safety inspection methods of 11 companies; appendix gives several forms used for safety inspection.
Safety inspections in and around iron mines in lake superior district
Safety inspection methods of 11 companies; appendix gives several forms used for safety inspection.
Safety inspections in and around iron mines in lake superior district
U. S. Bur. Mines -- Information Cir
Crawford, F.S. (author)
1931
77 pages
19 Supp plates
Report
English
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Accident experience iron-ore mines -- Lake superior district
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