Subjects
- Coal mining - New River field.1
- Coal mining - Regulation.1
- Coal mining - Safety.5
- Coal mining - Scrip.1
- Coal mining - Wage scales.1
- Coal mining - West Virginia Coal Association.1
- Coal mining - Winding Gulf field.1
- Coal mining - age affidavits.1
- Coal mining - camps and company towns.1
- Coal mining - coal and coke sales.1
- Coal mining - coal companies.15
- Coal mining - coal operators associations.3
- Coal mining - company stores.1
- Coal mining - disasters.3
- Coal mining - engineering problems.1