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Topical Subjects
- Coal Mines and Mining--Consolidation Coal Company.[remove]20
- Coal miners.[remove]20
- Coal-mining machinery.[remove]20
- Coal mines and mining--Equipment and supplies.10
- Coal mines and mining.4
- Loaders (Machines)2
- Shuttle cars (Mine haulage)2
- Coal mines and mining--Kentucky--Jenkins.1
- Coal mines and mining--Kentucky.1
- Coal mines and mining--West Virginia--Owings.1
- Coal mines and mining--West Virginia--Watson.1
- Coal mines and mining--West Virginia.1
- Roof trusses.1