Topical Subjects
- Coal mines and mining--Kentucky.1
- Coal mines and mining--Pennsylvania--McIntyre.1
- Coal mines and mining--Pennsylvania.1
- Coal mines and mining--Virginia--Pocahontas.1
- Coal mines and mining--West Virginia--Fire Creek.1
- Coal mines and mining--West Virginia--Mingo County.1
- Coal mines and mining--West Virginia--Owings.1
- Coal mines and mining--West Virginia--Watson.1
- Coal preparation plants.1
- Coal preparation.1
- Coal--Geology.1
- Coal--Transportation--West Virginia--Cedar Grove.1
- Coal--Transportation--West Virginia--Fayette County.1
- Coal--Transportation--West Virginia--Winding Gulf.1
- Coal.1
- Coalbed methane--Testing.1
- Company stores.1
- Demonstrations.1
- Dynamite.1
- Electricity in mining.1