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Topical Subjects
- Coal Mines and Mining--Coal Transportation--Rail.52
- Coal--Transportation.37
- Freight cars.37
- Coal Mines and Mining.21
- Coal mines and mining--West Virginia--Thomas.20
- Coal mines and mining--Safety measures.14
- Coal Mines and Mining--Mine Safety.13
- Coal mines and mining--Explosives.11
- Freight cars--West Virginia--Thomas.11
- Mine safety.11
- Coal--Transportation--West Virginia--Thomas.10
- Dynamite.10
- Coal mines and mining--Equipment and supplies.8
- Coal Mines and Mining--Mine Interiors--Machinery.7
- Conveying machinery.5
- Coal Mines and Mining--Miners at Work.4
- Coal miners.4
- Mine rescue work--Equipment and supplies.4
- Coal-handling machinery.3
- Coal-mining machinery.3