Topical Subjects
- Coal mines and mining--Explosives.10
- Coal Mines and Mining--Progressive Miners Of America--Ozanic Collection.9
- Boring.8
- Coal miners' spouses.8
- Mine gases--Measurement.8
- Cemeteries--Illinois--Mount Olive.7
- Coal Mines and Mining--Mine Facilities.7
- Coal miners--Dwellings.7
- Coal--Transportation.7
- Electric locomotives.7
- Mine railroads--Cars.7
- Mining machinery.7
- Coal Mines and Mining--Consolidation Coal Company--Inspection Trip, 1948.6
- Conveying machinery.6
- Mine railroad trains.6
- Mine timbering.6
- Coal Mines and Mining--Mine Safety.5
- Coal trade.5
- Mine safety.5
- African American coal miners.4