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Topical Subjects
- Coal Mines and Mining--Surface Mining.[remove]26
- Strip mining.18
- Power shovels.15
- Strip mining--Pennsylvania--Hazleton.3
- Automobiles.2
- Coal mines and mining.2
- Donkeys.2
- Tiger (Power shovel)2
- Abandoned mined lands reclamation--Ohio--Cadiz.1
- Abandoned mined lands reclamation.1
- Bulldozers.1
- Coal Mines and Mining--Coal Carts.1
- Coal--Transportation--Ohio--Cadiz.1
- Coal--Transportation.1
- Drive-in theaters--Ohio--Cadiz.1
- Green Hornet (Power shovel)1
- Strip mining--Ohio--Cadiz.1
- Tractor trailer combinations.1