The President , -2— In the event that it should become necessary to increase the amounts of fissionable and/or fusionable material to the extent of not more than ten percent beyond the amounts given above, it is requested that the above authorization include approval for such increase without further reference to your office. Respectfully yours, Oe o Qeuxte ey wee Lewis L. Strauss Chairman Bnelosure: Description of Thermonuclear Weapon Prototypes and Devices for Test at CASTILE CE | road van ai pe

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