# Coal mine safety: do unions make a difference?

> final contract report published in 2011

**Wikidata**: [Q24825097](https://www.wikidata.org/wiki/Q24825097)  
**Source**: https://4ort.xyz/entity/coal-mine-safety-do-unions-make-a-difference-


## References

1. NIOSHTIC-2
2. [Crossref](https://api.crossref.org/works/10.2139%2FSSRN.1846700)
3. Source