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A UNIT OF THE BRITISH COMMONWEALTH SCIENTIFIC OFFICE

Telephone : EXecutiva 2020

—FUR BLENO.:

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315-69-0
March 17tnS1954.
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a : . Lewis Strauss,
U,S. Atomic Energy Commission,

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Dear Mr. Strauss,

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At the request of Dr. J. G. Beckerley, I cabled
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REyesterday to Sir William Penney reminding him that he had expressed

aX doubts to you about the wisdom of declassifying the film "Operation
SSiIvy", and asking him if he would specify which items in the film he
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