# Hazardous Materials: Miscellaneous Petitions for Rulemaking (RRR)
> **Pipeline and Hazardous Materials Safety Administration** · Rule · Published 2013-03-25 · 78 FR 17874
## Document
- **Document number:** C1-2013-04197
- **Category:** hazmat
- **Sub-agency:** Pipeline and Hazardous Materials Safety Administration
- **Federal Register citation:** 78 FR 17874
- **CFR reference:** 49 CFR 172
- **Publication date:** 2013-03-25
- **DOT docket:** Docket No. PHMSA-2011-0142 (HM-219)
## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/03/25/C1-2013-04197/hazardous-materials-miscellaneous-petitions-for-rulemaking-rrr)
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