Subjects
- Coal miners--West Virginia1
- Coal mines and mining2
- Coal mines and mining -- Kentucky1
- Coal mining - Illinois.1
- Coal mining - Labor organization.6
- Coal mining - March on Mingo and Logan.1
- Coal mining - Medical care.2
- Coal mining - New River field.1
- Coal mining - Regulation.1
- Coal mining - Safety.5
- Coal mining - Strikes - Colorado mines.1
- Coal mining - Strikes - West Virginia mines.1
- Coal mining - Strip mining.1
- Coal mining - Wage scales.1
- Coal mining - Winding Gulf field.1