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Topical Subjects
- Coal miners.[remove]41
- Coal-mining machinery.[remove]41
- Coal mines and mining.23
- Coal Mines and Mining--Consolidation Coal Company.20
- Coal Mines and Mining--Miners at Work.18
- Coal mines and mining--Equipment and supplies.10
- Loaders (Machines)3
- Coal Mines and Mining--Mine Interiors--Machinery.2
- Coal mines and mining--West Virginia.2
- Shuttle cars (Mine haulage)2
- Boring.1
- Coal Mines and Mining--Mine Interiors.1
- Coal mines and mining--Kentucky--Jenkins.1
- Coal mines and mining--Kentucky.1
- Coal mines and mining--Safety measures.1
- Coal mines and mining--West Virginia--Owings.1
- Coal mines and mining--West Virginia--Watson.1
- Electricity in mining.1
- Mine roof bolting.1
- Roof trusses.1