Rule Clarifies Status of USPS Hazmat Regulations

Posted on 9/27/2021 by Roger Marks

USPS is amending the Domestic Mail Manual (DMM) and 39 CFR to clarify that the regulations for mailing hazardous materials are found in Publication 52, Hazardous, Restricted, and Perishable Mail.

Read the Final Rule

USPS removed its regulations for hazardous, restricted, and perishable materials from the Domestic Mail Manual (DMM) in 2014 to reduce the size of the manual and moved them to Publication 52. 

Publication 52 is available online.

The Final Rule also lists a variety of publications and memoranda that USPS uses to create new regulations. These includes Publication 52 as well as the DMM, the Postal Operations Manual, the International Mail Manual, circulars, handbooks, management or regional instructions, memoranda of policy, and more.

In the Rule, USPS clarifies what makes something a USPS regulation:
“...status as regulations depends not on the formal designation of the document, but on its statement of binding rules of future effect beyond those stated elsewhere in the Postal Service regulations.”

Enforceable USPS regulations are not necessarily codified in the Code of Federal Regulations, although they may be. 

Hazmat Postal Shipper Online Training

Lion's Hazmat Postal Shipper Online Course covers the USPS Publication 52 requirements that shippers must follow to offer hazardous materials through the mail. Build on your knowledge of US DOT's 49 CFR Hazardous Materials Regulations (HMR) and learn the unique requirements for hazardous materials by mail.

Shippers who complete this online course build expertise to identify which materials can  be mailed; which are prohibited; and how to ensure safe, on-time delivery of hazmat by mail.

Recent USPS Hazmat Rule Changes

Recent rule changes initiated by USPS concerning hazardous materials by mail include:  More about USPS and hazardous materials

Tags: hazardous materials, hazmat by mail, Publication 52, USPS, USPS hazmat

Find a Post

Compliance Archives

Lion - Quotes

This was the 1st instructor that has made the topic actually enjoyable and easy to follow and understand. Far better than the "other" training providers our company has attended!

Lori Hardy

Process & Resource Administrator

No comparison. Lion has the best RCRA training ever!!

Matt Sabine

Environmental Specialist

The instructor was excellent. They knew all of the material without having to read from a notepad or computer.

Gary Hartzell

Warehouse Supervisor

This is a very informative training compared to others. It covers everything I expect to learn and even a lot of new things.

Quatama Jackson

Waste Management Professional

Lion is easily and consistently the best option for compliance training. I've learned new information from every instructor I've had.

Rachel Mathis

EHS Specialist

Very witty instructor, made the long times sitting bearable. One of the few training courses I can say I actually enjoyed.

John Hutchinson

Senior EHS Engineer

The instructor was energetic and made learning fun compared to dry instructors from other training providers.

Andy D’Amato

International Trade Compliance Manager

I will never go anywhere, but to Lion Technology.

Dawn Swofford

EHS Technician

I can take what I learned in this workshop and apply it to everyday work and relate it to my activities.

Shane Hersh

Materials Handler

I used the IT support number available and my issue was resolved within a few minutes. I don't see anything that could have made it better.

Danny Province

EHS Professional

Download Our Latest Whitepaper

Your hazmat paperwork is the first thing a DOT inspector will ask for during an inspection. From hazmat training records to special permits, make sure your hazmat documents are in order.

Latest Whitepaper

By submitting your phone number, you agree to receive recurring marketing and training text messages. Consent to receive text messages is not required for any purchases. Text STOP at any time to cancel. Message and data rates may apply. View our Terms & Conditions and Privacy Policy.