Subjects
- Blankenship vs. Boyle.1
- Coal - Mine safety.1
- Coal miners1
- Coal miners - Medical care.1
- Coal mining - Labor organization.1
- Coal mining - Medical care.[remove]3
- Coal mining - Safety.1
- Coal mining - Working conditions.1
- Dental care1
- Dentists1
- Drugs and druggists.1
- Federal Coal Mine Health and Safety Act 1969.1
- Health services.1
- Hospitals and hospital records.1
- Hospitals and sanitariums.1