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Topical Subjects
- Coal Mines and Mining--Mine Interiors--Machinery.[remove]48
- Coal-mining machinery.[remove]48
- Coal mines and mining.29
- Coal mines and mining--West Virginia--Thomas.16
- Conveying machinery.15
- Coal miners.11
- Coal mines and mining--Equipment and supplies.4
- Shuttle cars (Mine haulage)3
- Coal mines and mining--Illinois--Elkville.2
- Coal mines and mining--Illinois--Carrier Mills.1
- Coal--Transportation.1
- Coal-handling machinery.1
- Mine railroads--Cars.1
- Mine railroads.1
- Mine timbering.1