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216 Nonmailable Matter Found in the Mail

Specific items, such as firearms, switchblade knives, controlled substances, motor vehicle master keys, and explosive or incendiary devices, generally are prohibited for mailing under DMM 601.8–11. When these types of nonmailable items are found in the mailstream, they must be handled in accordance with POM 139.117.

Other materials found in the mail that are believed to be nonmailable must be treated under the applicable conditions in DMM 601.8, POM 139.117–118, ASM 223.4, and Management Instruction (MI) DM–601–05–1, Hazardous Materials Acceptance and Handling.