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SECURITY THF ORMATION
UNITED STATES
ATOMIC ENERGY COMMISSION
WASHINGTON, D. C.
June 17, 1953
Dear Mr.
President:
This is to report that the Atomic Energy Commission has
. reviewed the documentary report film covering Operation IVY and
S has deleted from it the more highly sensitive portions, in con-
g@ formity with your recent instructions to me.
The resulting film
RI
3 retains a classification of Secret - Restricted Data, and with
&the deletions we have made, we believe the picture 1s now suit-
aple for showing to responsible persons who have a need to know
he general story of our progress toward the development of a very
eh- yield weapon but who do not need to know the details of that
@apon's construction or operation,
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.
The story contained in our Secret version of. the film tells
that we have successfully detonated an experimental device of
Epout ten to twelve megatons yield using a form of liquified
e reduced to the
point whére the device can be made into a de-
Hjivorableweapon
| 2ND REVIEW.DAYE:
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eSSessomydrogen as fuel.
The story also indicates that much further
mork is necessary before the size, weight, and complexity can
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“Thoughssome portions of the revised film are still“highly
lassified information, searching review of the presentation has
convinced us that the sensitive matter pertaining to weapon. design
details has been removed... This film is now available here for
showing to any groups you may direct to see it.
We feel that it
—RESTRIGTED-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,
DEPART
4 DECLASSIFICATION REVIEW
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