Subjects
- Coal mining.2
- Coal operators associations.1
- Environmentalism1
- Labor1
- Political activism.1
- Politics and government.2
- Rivers and river valleys.1
- Segregation in education1
- Socialism1
- Strip mining -- Appalachian Region1
- Union names.3
- Unions - National Miners Union.1
- Unions - UMWA.[remove]6
- Unions. SEE ALSO Labor organization.3
- United States. Labor Management Relations Act, 19471