Topical Subjects
- Coal Mines and Mining--Coal Carts.1
- Coal Mines and Mining--Mine Entrances.1
- Coal Mines and Mining--Mine Safety.1
- Coal Mines and Mining--Portraits--Group.1
- Coal Mines and Mining.1
- Coal mines and mining--Dust control--Water infusion.1
- Coal mines and mining--Dust control.1
- Coal mines and mining--Kentucky--Jenkins.1
- Coal mines and mining--Kentucky.1
- Coal mines and mining--West Virginia--Owings.1
- Coal mines and mining--West Virginia--Watson.1
- Coal--Geology.1
- Coalbed methane--Testing.1
- Coke-ovens.1
- Conveying machinery.1
- Electric locomotives.1
- Electricity in mining.1
- Elevators.1
- Freight cars.1
- Horses.1