What is US postal Policy DMM 841.122?

US Postal Policy DMM 841.122 pertains to the regulations governing the mailing of hazardous materials, specifically focusing on the packaging and labeling requirements for such items. This section outlines the necessary precautions to ensure the safety of postal workers and the general public when mailing potentially dangerous substances. Compliance with these guidelines is essential for the acceptance and delivery of hazardous materials through the postal system.