Topical Subjects
- Electric locomotives.5
- Tiger (Power shovel)5
- Barges.4
- Coal trade.4
- Electricity in mining.4
- Horses.4
- Bridges.3
- Coal Mines and Mining--Consolidation Coal Company--Inspection Trip, 1948.3
- Deforestation.3
- Scenes and Views.3
- Coal Mines and Mining--Coal Carts.2
- Coal Mines and Mining--Miners and Miners' Families' Daily Lives.2
- Coal Mines and Mining--Mining Towns.2
- Coal Mines and Mining--Surface Mining.2
- Coal Mines and Mining--William River Mine.2
- Floods.2
- Longwall mining.2
- Machine shops.2
- Mine railroad cars.2
- Mine ventilation.2