102-192.30—What types of mail does this part apply to?
(1)
All internal, incoming, and outgoing materials, regardless of whether or not they currently pass through a mail center; this includes envelopes, publications, postal cards, bulk mail, expedited mail, and individual packages up to 70 pounds that contain paper or publications; and
(2)
Materials carried by agency personnel, contractors, the United States Postal Service (USPS), and all other carriers of such items.
(b)
This part does not apply to shipments of parts or supplies from a materiel distribution center (a material distribution center is a warehouse that maintains and distributes an inventory of parts and supplies).