Topical Subjects
- Coal--Transportation--West Virginia--Owings.1
- Coal--Transportation--West Virginia--Pursglove.1
- Coal--Transportation--West Virginia--Star City.1
- Coal--Transportation--West Virginia--Vivian.1
- Coal-carrying vessels--Minnesota--Duluth.1
- Coal-fired furnaces.1
- Coal-fired power plants--West Virginia--Riversville.1
- Coal-mining machinery--Maintenance and repair.1
- Coal-mining machinery--Ohio--Georgetown.1
- Coalbed methane--Testing.1
- Coke plants--Pennsylvania--Clairton.1
- Coke-ovens--Ohio--Lorain.1
- Coke.1
- Company stores--Kentucky--Van Lear.1
- Core drilling.1
- Docks--Minnesota--Duluth.1
- Drive-in theaters--Ohio--Cadiz.1
- Electric power-plants--Ohio--Toronto.1
- Electrodes, Carbon.1
- Fire engines.1