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Honorable Robert LeBaron
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Chairman, Military Liaison Committee .
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to the Atomic Energy Commission
Dear Mr, LeBaron:
“
D PARTM =ERT OF ENE?
Ry:
SINGLE REVIEW AUTH: ORISED
VV HEED BY
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Reference is made to your letter of November 3, 1952 and wy.
answer of December 15, 1952}*concerning plans for CASTLE,.
.
The results of the IVY thermonuclear experiment indicate
7
certain reorientation of the thermonuclear weapons progran ty.
activi
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in order to ingure broad and
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ASTLE
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Itis now apparent that material.
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tation of
The Mike device behaviour leads us to believe that adap
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its design to a weaponor weapoys offers real prom
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type dagign to a weapon configuration, however, involves & great
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amount of engineering and process /development and tast, inelu
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ing a mmber of important tests now scheduled for the UPSH
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series in the Spring of 1953.
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