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Topical Subjects
- Coal Mines and Mining--Mine Facilities.[remove]24
- Coal mines and mining.[remove]24
- Headframes (Mining)2
- Tipples.2
- Coal Mines and Mining--Coal Carts.1
- Coal Mines and Mining--Coal Transportation--Rail.1
- Coal miners--Dwellings.1
- Coal trade.1
- Coal--Transportation.1
- Cranes, derricks, etc.1
- Dams.1
- Electric transformers.1
- Mine ventilation.1
- Swimmers.1
- Tanks.1