Region
Pennsylvania
151
United States
39
Schuylkill County
8
Luzerne County
5
Scranton
5
Mauch Chunk (Pa.)
4
Pennsylvanie
4
West Virginia
4
Wyoming Valley
4
Carbon County
3
Centralia
3
Centralia (Pa.)
3
Japan
3
Kentucky
3
Lackawanna County
3
Penn
3
Scranton (Pa.)
3
Appalachian Mountains
2
Bradford County
2
Carbon County (Pa.)
2
Clinton County
2
Helvetia
2
Helvetia (Pa.)
2
Helvetia (Penns.)
2
Luzerne Co
2
Massachusetts
2
McKean County
2
Northumberland County
2
Virginia
2
Wyoming Valley (Pa.)
2
Accidents
1
Africa
1
Appalachian Region
1
Barclay Coal Bed (Bradford County, Pa.)
1
Blair County
1
Boone County
1
Cambria County
1
Carbondale
1
Carbondale (Pa.)
1
Claghorn (Pa.)
1
Coal and coal mines
1
Columbia County
1
Donegal (Ireland)
1
East (U.S.)
1
Economic conditions
1
Elk County
1
États-Unis
1
Forest City
1
France
1
Great Britain
1
more ...