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April 2, 2014
Revised Publication 52, Hazardous, Restricted, and Perishable Mail
The Postal Service™ has revised Publication 52, Hazardous, Restricted, and Perishable Mail, our manual on mailing and shipping policies covering potentially hazardous, restricted or perishable items.
Among other changes, the revisions include new marking requirements for shipping hazardous materials by air and ground.
Other modifications include:
Publication 52 is changing as it incorporates DMM standards on hazardous, restricted or perishable material, providing a simpler reference for employees and customers. In the coming months, more updates will be available.