At Boulder, mail is delivered unopened to the addressee. Certified and Registered Mail - The Mail and Distribution Group prepares a routing slip to be signed by the addressee or someone authorized to handle mail for them. If the addressee receives mail accompanied by PS Form 3811, Domestic Return Receipt, the addressee signs the receipt when the mail is received and gives the signed receipt to the messenger. All certified and registered mail originating in the U.S. is opened in the Mail and Distribution Group to determine if it contains classified material except that addressed to the Contracting Office or the Security Office. Classified material is routed through the Security Office.
Nonclassified material is sent to the addressee.
Packages not addressed to a specific person and packages with a NIST purchase order number are sent by the Mail and Distribution Group to Shipping and Receiving for delivery to the proper office. The mail is returned to the sender by the U.S. Postal Service. Do not cover the original address with a label and do not put mail in an envelope with the NIST return address. Former NIST employees should be asked to notify their correspondents of their new address. Mail to Main Commerce is picked up from the Mail and Distribution Group by the NIST shuttle and delivered to the Commerce Mail Room.