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Publication 52 - Hazardous, Restricted, and Perishable Mail >
1 Introduction > 11 Purpose > 112 Use
This publication is designed for use by Postal Service personnel in business mail entry and retail units, marketing, and other functional areas that are involved with providing mailability information to Postal Service customers.
Follow the mailing standards in the DMM, along with the additional guidelines contained in this publication, when deciding whether and under what conditions hazardous materials, restricted matter, and perishable matter are permitted to be mailed.
The content of this publication is based on DMM standards and regulations of federal agencies in effect at the time of publication. Future changes to the DMM or federal regulations may supplement, amend, or supersede the content of this publication.