DescriptionAEC Authorization for Operation Castle.png
English: The United States Department of Defense, Defense Nuclear Agency (1982). Castle Series. Washington D.C.: United States Government Printing Office. (DNA 0635F) Cover letter.
The letter text:
“
IN REPLY REFER TO:
MAT:NDG
UNITED STATES
ATOMIC ENERGY COMMISSION
WASHINGTON 25, D. C.
JAN 21 1954
Major General P. W. Clarkson, USA
Commander, Joint Task Force SEVEN
Temporary "U" Building, Room 2005
12th and Constitution Avenue, N. W.
Washington 25, D. C.
Dear General Clarkson:
Presidential approval has been received for executing CASTLE
with March 1, 1954 as the starting date. Permission has also
been granted to detonate seven shots and to expend fissionable
and fusionable materials in the amounts indicated below.
This letter should be construed as your authority to execute
CASTLE as planned.
Sincerely yours,
K. D. Nichols
General Manager
Enclosure:
Cys 1A & 2A Fissionable and Fusionable
Material For CASTLE Devices
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The United States Department of Defense, Defense Nuclear Agency (1982). Castle Series. Washington D.C.: United States Government Printing Office. (DNA 0635F) Cover letter
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