Declassification of Formerly Restricted Data

Formerly Restricted Data

The Second Open Government National Action Plan for the United States of America (NAP 2.0) called for the DoD, Department of Energy (DOE), and Department of State (DOS) to determine, consistent with applicable statutes, how to implement a systematic review process for the declassification of no-longer sensitive historical information on nuclear programs (Formerly Restricted Data or FRD), focusing on specific events and topics of historical nuclear policy interest and ways for the public to help identify priorities for declassification review.

DoD and DOE have developed a process to begin the declassification process with DOS participating as necessary. Under the Joint DoD-DOE working process, FRD topics are brought forward thru routine partnership & engagement and are evaluated for declassification in the context of technical, policy / political, and administrative benefits.

Declassification Actions


Effective 9 April, 2014 the Department of Defense declassified the fact that the last W80-0 TLAM-N warhead was retired from Department of Defense service on August 31, 2011. As of August 31, 2011, the Department of Defense considers the W80-0 warhead as totally removed from the nuclear arsenal.

On 24 March, 2014, the Department of Defense and the Department of Energy jointly declassified the total size of the U.S. nuclear stockpile and the number of weapons dismantled for disposal, both as of 30 September, 2013.  Click Here to view the numbers.

Effective 20 November, 2014, The Department of Defense and the Department of Energy jointly declassified the fact that the yield of the B53/W53 Y1 was 9 megatons.





DoD Nuclear Matters Handbook

DoE: An Overview of the Restricted Data and Formerly Restricted Data Classification System

Link to the Atomic Energy Act of 1954