39 CFR §7.3

1. (a)Disclose matters that are:
   1. (1)Specifically authorized under criteria established by an Executive order to be kept secret in the interests of national defense or foreign policy, and
   2. (2)In fact properly classified under that Executive order;
2. (b)Relate solely to the internal personnel rules and practices of the Postal Service, including the Postal Service position in negotiations or consultations with employee organizations.
3. (c)Disclose matters specifically exempted from disclosure by statute (other than the Freedom of Information Act, 5 U.S.C. 552), provided that the statute:
   1. (1)Requires that the matters be withheld from the public in such a manner as to leave no discretion on the issue, or
   2. (2)Establishes particular criteria for withholding or refers to particular types of matters to be withheld;
4. (d)Disclose trade secrets and commercial or financial information obtained from a person and privileged or confidential, such as market information pertinent to Postal Service borrowing or investments, technical or patent information related to postal mechanization, or commercial information related to purchases of real estate;
5. (e)Involve accusing any person of a crime, or formally censuring any person;
6. (f)Disclose information of a personal nature, such as personal or medical data regarding any individual if disclosure would constitute a clearly unwarranted invasion of personal privacy;
7. (g)Disclose investigatory records compiled for law enforcement purposes, or information which if written would be contained in those records, but only to the extent that the production of those records or information would:
   1. (1)Interfere with enforcement proceedings,
   2. (2)Deprive a person of a right to a fair trial or an impartial adjudication,
   3. (3)Constitute an unwarranted invasion of personal privacy,
   4. (4)Disclose the identity of a confidential source and, in the case of a record compiled by a criminal law enforcement authority in the course of a criminal investigation, or by an agency conducting a lawful national security intelligence investigation, confidential information furnished only by the confidential source,
   5. (5)Disclose investigative techniques and procedures, or
   6. (6)Endanger the life or physical safety of law enforcement personnel;
8. (h)Disclose information contained in or related to examination, operating, or condition reports prepared by, on behalf of, or for the use of an agency responsible for the regulation or supervision of financial institutions;
9. (i)Disclose information the premature disclosure of which would be likely significantly to frustrate implementation of a proposed action of the Board, such as information relating to the negotiation of a labor contract or proposed Postal Service procurement activity, except that this provision does not apply in any instance where:
   1. (1)The Postal Service has already disclosed to the public the content or nature of the proposed action, or
   2. (2)The Postal Service is required by law to make such disclosure on its own initiative before taking final action on the proposal; or
10. (j)Specifically concern the issuance of a subpoena by the Postal Service, or the participation of the Postal Service in a civil action or proceeding, such as a postal rate or classification proceeding, an action in a foreign court or international tribunal, or an arbitration, or the initiation, conduct, or disposition by the Postal Service of a particular case of formal adjudication under the procedures of 5 U.S.C. 554 or otherwise involving a determination on the record after opportunity for a hearing.