Subjects
- Coal mining - New River field.1
- Coal mining - Regulation.1
- Coal mining - Safety.1
- Coal mining - Scrip.1
- Coal mining - Winding Gulf field.1
- Coal mining - coal and coke sales.1
- Coal mining - coal companies.2
- Coal mining - coal operators associations.1
- Coal mining - company stores.1
- Coal mining -- Strikes4
- Coal mining.3
- Coal trade1
- Court records1
- Depression.1
- Diaries and journals.1