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Topical Subjects
- Power shovels.[remove]69
- Coal mines and mining.58
- Coal Mines and Mining--Portraits--Group.54
- Strip mining.48
- Coal Mines and Mining--Consolidation Coal Company.10
- Tiger (Power shovel)5
- Coal Mines and Mining--Surface Mining.4
- Green Hornet (Power shovel)2
- Coal mines and mining--Ohio--Cadiz.1
- Non-WV--Stewart, E.E. Collection--Claysville, PA--Business and Industry.1
- Strip mining--Ohio--Cadiz.1