Topical Subjects
- Tipples--West Virginia.4
- Automobiles.3
- Coal preparation plants--Equipment and supplies.3
- Coal preparation plants.3
- Coal--Geology.3
- Mine railroads.3
- Mine roof bolting.3
- Mining machinery.3
- Coal mines and mining--Explosives.2
- Coal mines and mining--Kentucky.2
- Coal mines and mining--West Virginia--Owings.2
- Coal preparation plants--West Virginia--Owings.2
- Coal preparation.2
- Indians of North America--Ohio--Antiquities.2
- Loading and unloading.2
- Mounds--Ohio.2
- Tiger (Power shovel)2
- Abandoned mined lands reclamation.1
- Adena culture--Ohio.1
- Barges.1