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Topical Subjects
- Coal--Transportation.[remove]213
- Freight cars.117
- Coal mines and mining.66
- Coal Mines and Mining--Coal Transportation--Rail.62
- Coal Mines and Mining.39
- Tipples.38
- Coal preparation plants.22
- Coal Mines and Mining--Consolidation Coal Company.19
- Coal Mines and Mining--Tipples.19
- Coal Mines and Mining--Preparation Plant Exteriors.14
- Mine railroads.13
- Conveying machinery.10
- Coal Mines and Mining--Coal Transportation--River.9
- Barges.8
- Coal miners.7
- Tipples--West Virginia.7
- Towboats.7
- Coal Mines and Mining--Mine Entrances.6
- Coal miners--Dwellings.6
- Coal mines and mining--West Virginia.6