DEPARTMENT OF DEFENSE
MILITARY LIAISON COMMITTEE
P. 0, BOX 1814
WASHINGTON 13, D.C.
June 10, 1958
Dear Mr, Strauss:
Your letter of May 28, 1958* stated that the Commission
has approved the declassification of the information listed
below concerning shot PINON of Operation HARDTACK and requested
the comments of the Department of Defense with respect to these
declassification actions:
a. The location and schedule and actual time of
shot.
b. The device to be tested is contained in
a cylindrical container about 5 feet in diameter
and 12 feet long, which will weigh about 8 tons
including the contents.
Also, the center of
gravity insofar as it may be revealed by weighing
under each of the four corners of the cradle,
ec. The bomb fraction tracer will be 20 tons
of uranium (isotopic composition will remain
classified).
d. The total yield as measured by fireball
photography and the necessary photography.
(Only the predicted range of yield will be
announced in advance of the test.)
e,. Cloud samples as collected on filter paper
and any information which might be derived from
analyzing them without the use of any classified
information,
f. Fission yield as determined by radiochemistry
at UCRL, Berkeley and the analytic procedures used
in this determination, The participants will observe
this determination and may actually assist in carrying
out the analyses.
&. Identification of the device being tested as a
stockpile weapon,
= See ABC 952/51.
~-RESPRECPED~-DATA—
This document contaiy
ie
defined i
Its tra
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d data as
Act of 1954,
sclosure of its
erany manner to an unauthorized
MTis prohibited,