Subjects
- Coal mines and mining -- Electric equipment1
- Coal mining - Labor organization.3
- Coal mining - Logan Coal Operators Association.1
- Coal mining - March on Mingo and Logan.1
- Coal mining - New River field.1
- Coal mining - Regulation.1
- Coal mining - Safety.1
- Coal mining - West Virginia Coal Association.1
- Coal mining - Winding Gulf field.1
- Coal mining - Working conditions.1
- Coal mining - coal and coke sales.1
- Coal mining - coal companies.5
- Coal mining - coal operators associations.3
- Coal mining - company stores.1
- Coal mining - disasters.1