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Topical Subjects
- Coal miners.[remove]19
- Loaders (Machines)[remove]19
- Coal mines and mining.12
- Coal Mines and Mining--Miners at Work.11
- Coal-mining machinery.7
- Coal Mines and Mining--Consolidation Coal Company.5
- Coal Mines and Mining--Pocahontas Operators Association.3
- Coal mines and mining--Equipment and supplies.2
- Coal mines and mining--West Virginia--Mingo County.1
- Coal mines and mining--West Virginia.1
- Coke-ovens.1
- Freight cars.1
- Shuttle cars (Mine haulage)1