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This document consists of
Copy No. i of
14
SECRET
By aut
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Doctmgnt—No LXT-2124 ye
QoP_SRERED
SECURITY INFORMATION
UNITED STATES
ATOMIC ENERGY COMMISSION
WASHINGTON, D. C.
January 2,
1953
Honorable Robert LeBaron
Chairman, Military Liaison Committee
to the Atomic Energy Commission
Dear My.
LeBaron:
Reference is made to your letter of November 3, 1952*
and my answer of December 15, 1952,** concerning plans for
CASTLE,
The results of the IVY thermonuclear
certain reorientation of the thermonuclear
in order to insure broad and rapid progress
The revised program anc its bearing on the
CASTLE Operation are discussed below,
| It is now apparent
;
_—_
4
‘that material availability for this weapon indicates November
as the earliest possible date for its full-scale test.
aa
rwp
oom my
ry
2
Yh)
Se
experiment indicate
weapons program
in this activity.
timing of the
The Mike device behaviour leads us to belteve that
adaptation_of its design to a weapon or weapons offers reals.
/ promis
‘Po convert
the Mike type
design
to a weapon configuration,
however, involves a great amount of engineering and process
*
**
Secretariat note
- Circulated in AEC
4,
Des
“&, f &.)
597
Secretariat note - Circulated in AEC 597/3
RESTRICTED~DAPA-
This document contains restricted data as
defined in the Atomic Energy Act of 1946,
Its transmittal or the disclosure
of
its
contents in any manner to an unauthorized
person is prohibited.
-1-
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