Subjects
- Coal mining - coal companies.[remove]8
- Coal mining - coal operators associations.2
- Coal mining - company stores.1
- Coal mining - contracts.1
- Coal mining -- Strikes1
- Coal mining.4
- Coal trade1
- Diaries and journals.2
- Editors - letters and papers.2
- Elections2
- Gas industry1
- General stores2
- Iron furnaces and iron industry.1
- Judges - letters and papers.2
- Labor organization. SEE ALSO Coal mining - labor2