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- Mining soft hematite at mine no. 2 of the Marquette range, Michigan.
- Safety in the iron mines of the Menominee Range, Michigan
- Storage of explosives in underground mines of the Lake Superior District
- Transportation of iron ore, underground mines, Lake Superior district
- Conveyor systems in underground iron-ore mines, Lake Superior district
- Carbide insert bit drilling at the Cleveland-Cliffs Iron Co. mines, Ishpeming, Mich.
- Drilling and blasting, open-cut iron-ore mines, Lake Superior District
- Ventilation-air heating plants of the Menominee Range
- Central Mine Rescue Station, the Cleveland-Cliffs Iron Co. Mather Mine B Shaft, Negaunee, Mich.