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Topical Subjects
- Coal mines and mining.4
- Coal-mining machinery.4
- Strip mining.4
- Power shovels.3
- Coal Mines and Mining--Coal Transportation--River.2
- Coal Mines and Mining--Miners at Work.2
- Coal Mines and Mining--Portraits--Group.2
- Coal Mines and Mining--Preparation Plant Exteriors.2
- Coal Mines and Mining--Surface Mining.2
- Coal miners.2
- Shuttle cars (Mine haulage)2
- Towboats.2
- Coal Mines and Mining--Coal Displays.1
- Coal Mines and Mining--Consolidation Coal Company.1
- Coal Mines and Mining--Mine Interiors.1
- Coal Mines and Mining--Preparation Plant Interiors.1
- Coal miners--Kentucky.1
- Coal mines and mining--Equipment and supplies.1
- Coal mines and mining--Kentucky.1
- Coal preparation plants--West Virginia--Farmington.1