Copy No.
of
12
Series
A,
ENCLOSURE I
UNITED STATES
ATOMIC ENERGY COMMISSION
WASHINGTON 25, D. Ca.
June 4, 1957
Honorable Chet Holifield
Chairman, Special Subcommittee
on Radiation
Joint Committee on Atomic Energy
Congress of the United States
Dear Mr,
1957,
Holifield:
This is in response to Mr, Ramey's verbal request of June 1,
for a classified summarization of estimated fission and
total yields from tests by the U.S., the U.K., and the U.S.S.R,
This information is attached,
The listed values for the
total yield of the British and Russian shots are the best
-estimates of the Joint Atomic Energy IntelligenceCommittee, ....._
poe
¥&
eR
Sincerely yours,
/s/ K. E, Fields
General Manager
ESPRECTED-DAPA-
This document ecntains restricted data as
defined in the Atomic Energy Act of 1954,
Its transmittal or the disclosure of its
contents in any manner to an unauthorized
person is prohibited,
l-
Enclosure I
4.
-~
aw+
you.
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