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Topical Subjects
- Coal Mines and Mining--Consolidation Coal Company.[remove]28
- Coal-mining machinery.[remove]28
- Coal miners.22
- Coal mines and mining--Equipment and supplies.13
- Coal mines and mining.6
- Loaders (Machines)4
- Mining machinery.3
- Shuttle cars (Mine haulage)2
- Coal mines and mining--Explosives.1
- 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