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Topical Subjects
- Coal Mines and Mining--William River Mine.[remove]13
- Coal mines and mining--West Virginia--Webster County.7
- Electric current rectifiers.3
- Coal miners--West Virginia--Webster County.2
- Coal mines and mining--West Virginia--Ansted.2
- Coal mines and mining.2
- Coal--Geology.2
- Conveying machinery.2
- Tipples.2
- Coal-mining machinery.1
- Mine railroads.1
- Shuttle cars (Mine haulage)1