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Dear tir. “reeidmt:
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Mermally the Atasic Energy Comiesion eutmite to you spproxinstely
eix aonths ahead of any meclear test series, when the axact shote
to be fired become reasonably firm, a Letter outlining the ob-
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“Subject: Plane for Initiation of HARDTACK
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jectives and scope of the series. The sauce letter or a Later one
reqoeste approval, ae required by law, for the expenditure of the
ppepacial nuclear materiale involwed. ‘“‘y letter to you of tecember7(~
21, 1956, deseribed the PLUWEBOG Operation end that of Fabruary 21,
|
3997 mequieted epproveal for expending ~aterlals.
Planing has gone forward, ap ie necessary, for the next Pepifie
gortex, termed Operation MARDTACK, and plamed originally te begin |.
:
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aveut May 1, 1958. HARUTACK ds « critics! operstion to our develope _.
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mental progress and should inelude:
lL.
igh-altitude firings to test our capability te detect
nuclear detonatéions undex these conditions and te ob=tein
effects information applicable t. highaltttade miseile
and counter-uissile progrma.
2. Several shots necessary for the develayment of officient
clean “eapons io nedlwa sal higher yleld.
3. Proof teste of warheads for the IRBY and ICBM.
he Sevelocasntal and proof tents of neverel new barbs and
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warheads for our defense or other tactical wav.
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5. Sxploretery firings to eotablich prineiples comected... Sigs
With sealler or eleaser or otherwise inproved denigaay: ©
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to include clean, tactical designe.
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Cartein wespone effects tests for the Copartnent of
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Defense.
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* tn view of the importance of this sertor to our defense posture 4— OZ S|
and the prerant state of international relations with eeapect 009
tseting, it appesra desirable that we start EARDTACK an early ac
<,poanible consistent with achieving the necessary objectives of
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