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Topical Subjects
- Coal Mines and Mining.26
- Coal mines and mining--West Virginia--Marion County.15
- Coal mines and mining--West Virginia--Harrison County.3
- Coal mines and mining--Maryland--Cumberland.1
- Coal mines and mining--Maryland.1
- Coal mines and mining--West Virginia--Barbour County.1
- Coal mines and mining--West Virginia--Monongalia County.1
- Coal mines and mining--West Virginia.1
- Coal--Transportation.1
- Coal-mining machinery.1
- Railroad repair shops--Maryland--Garrett County.1
- Railroad yards--Maryland--Garrett County.1
- Test1
- Wharves--Maryland--Cumberland.1