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Topical Subjects
- Conveying machinery.4
- Electric locomotives.4
- Horses.4
- Coal Mines and Mining--Mine Entrances.3
- Coal Mines and Mining--Trevey Collection.3
- Coal Mines and Mining--Miners and Miners' Families' Daily Lives.2
- Coal Mines and Mining--Price Hill Colliery.2
- African American coal miners.1
- Coal Mines and Mining--African-American Miners--Carter Collection.1
- Coal Mines and Mining--Coal Carts.1
- Coal Mines and Mining--Mining Towns.1
- Coal--Geology.1
- Electricity in mining.1
- Mine gases--Testing.1
- Mules.1
- Railroad tracks.1
- Working dogs.1