Subjects
- Blankenship vs. Boyle.1
- Coal industry.1
- Coal miners1
- Coal mining - Medical care.1
- Coal mining - coal operators associations.1
- Coal mining.1
- Coal operators associations.1
- Dental care1
- Dentists1
- Drugs and druggists.1
- Environmentalism1
- Federal Coal Mine Health and Safety Act 1969.1
- Health services.1
- Hospitals and hospital records.1
- Hospitals and sanitariums.1