Topical Subjects
- Coal preparation plants--West Virginia--Middleton.1
- Coal preparation plants--West Virginia--Monongalia County.5
- Coal preparation plants--West Virginia--Morgantown.1
- Coal preparation plants--West Virginia--Owings.7
- Coal preparation plants--West Virginia--Pursglove.2
- Coal preparation plants--West Virginia--Summerlee.1
- Coal preparation plants--West Virginia--Thomas.5
- Coal preparation plants--West Virginia--Vivian.1
- Coal preparation plants--West Virginia--Winding Gulf.2
- Coal preparation plants--West Virginia.12
- Coal preparation plants.141
- Coal preparation--West Virginia--Morgantown.1
- Coal preparation.58
- Coal trade--Accidents.1
- Coal trade--Exhibitions.1
- Coal trade--Illinois--Muddy.1
- Coal trade--Maryland--Williamsport.1
- Coal trade--Quality control.1
- Coal trade--West Virginia--Coalwood.2
- Coal trade--West Virginia--Elk Garden.1