March 19, 2018

Andrew Weston-Dawkes
Director, Office of Classification
US Department of Energy


Dear Dr. Weston-Dawkes:

This is a proposal for declassification pursuant to 10 C.F.R. 1045.20
regarding information classified under the Atomic Energy Act.

We request the declassification of the amount of the US inventory
of Highly Enriched Uranium.

As you know, the HEU inventory was last declassified by the Obama
Administration in 2016, reflecting the total HEU inventory as of
September 30, 2013.

We are now requesting that this information be updated to the
present, or at least to a more recent date.

We believe the proposed declassification would provide appropriate
transparency and would promote security:  As the Obama White House
stated in 2016 when it declassified the 2013 HEU inventory, "This
type of information sharing, subject to respective national laws
and procedures, is an important part of the effort to strengthen
global nuclear security."

We therefore request that the Department consider declassifying
this information, as provided in 10 C.F.R. 1045.20.

Thank you for your consideration.


Steven Aftergood
_____________________
Steven Aftergood
Project on Government Secrecy
Federation of American Scientists
1112  16th  Street NW, Suite 400
Washington, DC  20036

email: [email protected]
voice: (202)454-4691