Topical Subjects
- Coal mines and mining--West Virginia--Piedmont.1
- Coal mines and mining--West Virginia--Raleigh County.1
- Coal mines and mining--West Virginia--Whipple.1
- Coal mines and mining--West Virginia.1
- Coal preparation plants.1
- Coal trade--Maryland--Williamsport.1
- Coal--Transportation--West Virginia--Skelton.1
- Coal--Transportation.1
- Coal-mining machinery.1
- Coal.1
- Conveying machinery.1
- Counties--Boone.1
- Cranes, derricks, etc.1
- Earthmoving machinery.1
- Elevators.1
- Freight cars--West Virginia--Skelton.1
- Harness making and trade--West Virginia--Thomas.1
- Lumber-yards--Maryland--Williamsport.1
- Machine shops.1
- Mine railroads--West Virginia--Webster County.1