# Safety and Health Standards-Underground Metal and Nonmetal Mines
> **US Department of Labor** · Rule · Published 2009-04-28 · 74 FR 19132
## Document
- **Document number:** E9-9767
- **Category:** other
- **Sub-agency:** US Department of Labor
- **Federal Register citation:** 74 FR 19132
- **CFR reference:** 30 CFR 57
- **Publication date:** 2009-04-28
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2009/04/28/E9-9767/safety-and-health-standards-underground-metal-and-nonmetal-mines)
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