USA Banner

Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Interpretation Response #02-0238 ([Sandia National Laboratories] [RolandM. Kelley])

Below is the interpretation response detail and a list of regulations sections applicable to this response.

Interpretation Response Details

Response Publish Date:

Company Name: Sandia National Laboratories

Individual Name: RolandM. Kelley

Location State: NM Country: US

View the Interpretation Document

Response text:

Oct 16, 2002

Roland M. Kelley                 Reference No. 02-0238
Packaging Consultant
Sandia National Laboratories
P.O. Box 5800, MS 1120
Albuquerque, NM 87185

Dear Mr. Kelley:

This is in response to your September 3, 2002 letter, requesting clarification, of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to marking requirements on the side of steel drums.  Specifically, you question the current validity of Interpretation letter dated August 23, 1993 and addressed to Evans Industries, Inc. stating that the United Nations symbol is required for any additional replication of markings other than embossed.

As provided in § 178.503, a packaging conforming to a UN standard must be marked with the United Nations symbol as illustrated in paragraph (e)(1) of this section.  The letters, "UN" may be applied in place of the symbol for embossed metal receptacles.  Any additional replication of the required UN marking through other means (e.g. silk screening or stenciling) must include the UN symbol rather than the letters "UN".

I hope this information is helpful.  If we can be of further assistance, do not hesitate to contact us.


Delmer F. Billings
Chief, Standards Development
Office of Hazardous Materials Standards


Regulation Sections

Section Subject
178.503 Marking of packagings