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Topical Subjects
- Mine safety.3
- Boring.2
- Coal Mines and Mining--Miners and Miners' Families' Daily Lives.2
- Electric transformers.2
- Loaders (Machines)2
- Mine gases--Measurement.2
- Mine roof bolting.2
- Shuttle cars (Mine haulage)2
- Coal Mines and Mining--Mine Interiors--Machinery.1
- Coal miners--Dwellings--West Virginia.1
- Coal mines and mining--Explosives.1
- Coal-mining machinery--Maintenance and repair.1
- Dams.1
- Fire engines.1
- Freight cars.1
- Mine rescue work.1
- Mine ventilation.1
- Pumping machinery.1
- Safety lamps.1