# Global Industrial Packaging — Hazardous Materials Safety Interpretation - **operation:** document - **citation:** 25-0060 - **title:** Global Industrial Packaging — Hazardous Materials Safety Interpretation - **source type:** guidance - **agency:** Pipeline and Hazardous Materials Safety Administration - **status:** guidance - **official:** true - **published on:** 2025-07-15 - **effective on:** Not available - **summary:** 25-0060 response to Global Industrial Packaging concerning 178.503. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-interpretation-25-0060.json - **markdown:** https://regulus.evalyn.ai/document/phmsa-interpretation-25-0060.md - **app url:** https://regulus.evalyn.ai/document/phmsa-interpretation-25-0060 - **source url:** https://www.phmsa.dot.gov/sites/phmsa.dot.gov/files/2025-07/250060.pdf **body:** <<>> 1200 New Jersey Avenue, SE Washington, DC 20590 U.S. Department of Transportation Pipeline and Hazardous Materials Safety Administration July 15, 2025 John Foryt Director, Global Product Safety & Compliance Global Industrial Packaging 366 Greif Parkway Delaware, Ohio 43015 Reference No. 25-0060 Dear Mr. Foryt: This letter is in response to your May 1, 2025 email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to markings on UN specification non-bulk performance-oriented packagings. Specifically, can a single UN symbol be used to meet the requirements in § 178.503(a)(1) when multiple (e.g., two or more) markings are included on a packaging. No. In accordance with § 178.3(c), the HMR specifically states if more than one marking appears on a packaging, each marking must appear in its entirety. Thus, each marking string must include its own UN symbol or the letters “UN” as part of the marking string. I hope this information is helpful. Please contact us if we can be of further assistance. Sincerely, Dirk Der Kinderen Chief, Standards and Development Branch Standards and Rulemaking Division <<>> May 1, 2025 Mr. Shane Kelley Director, Standards and Rulemaking Division U.S. DOT/PHMSA (PHH-10) 1200 New Jersey Avenue, SE East Building, 2nd Floor Washington, DC 20590 Submitted via email to infocntr@dot.gov Letter of Interpretation Request Dear Mr. Kelley: On behalf of Greif Inc. (GBC), this communication is to request a formal letter of interpretation around the requirements for marking UN packaging in 49 CFR 178.503. Specifically, Greif wishes to understand whether a single UN symbol can be used to meet the requirements of 178.503(a)(1) when multiple (2 or more) markings are included on a packaging. To better illustrate the question, the below graphic highlights the above-mentioned scenario where a 1H1 plastic drum carries two markings in the embossment. While the requirements for the inclusion of the lowercase UN symbol in a mark are clear, the CFR text does not make clear whether each mark must begin with a separate UN symbol, or if one large symbol at the beginning of each mark fulfills the requirement. Thank you for your attention and response to Greif’s request for a formal letter of interpretation. Global Industrial Packaging 366 Greif Parkway – Delaware, Ohio 43015 Corporate Office 425 Winter Road – Delaware, Ohio 43015 www.greif.com <<>> Sincerely, John Foryt Director, Global Product Safety & Compliance John.Foryt@Greif.com 614-499-4919 Global Industrial Packaging 366 Greif Parkway – Delaware, Ohio 43015 Corporate Office 425 Winter Road – Delaware, Ohio 43015 www.greif.com - **truncated:** false - **body characters:** 2707