Topical Subjects
- Coal preparation plants.8
- Coal preparation.4
- Coal trade--Accidents.1
- Coal trade--Exhibitions.1
- Coal trade.49
- Coal washing.3
- Coal--Awards.1
- Coal--Exhibitions.11
- Coal--Storage.1
- Coal--Transportation--Italy--Livorno.1
- Coal--Transportation--West Virginia--Fairmont.1
- Coal--Transportation--West Virginia.6
- Coal--Transportation.7
- Coal-mining machinery.2
- Coal.3
- Company stores--West Virginia--Enterprise.1
- Conveying machinery.1
- Docks--Minnesota--Duluth.1
- Docks.2
- Electric locomotives.4