- 4 ‘ 2" ys ey ‘i i] CH 3 © ped 7 I lS ee Re. COPY] SRCRET™ L. 1% 64%. 086 c - FI t 411778 28keves J-3/F7f0.07 Director Division of Military Application Atomic Energy Commission 1993 1901 Constitution Avenue Washington 25, D. C. Dear General Fields, This letter will confirm our verbal agreement, reached in conjunction with Dr. Alvin C. Graves on Friday, 24 July 1953, regarding the release of certain "Sensitive" thermonuclear information to a limited number of Joint Task Force SEVEN staff officers. The members of JIF SEVwho have a definite need to know are as follows: "Q" Clearance No. PRIVACY ACT MATERIAL REMOVED On all visits to ADC installations, the above personnel will require an Alpha 11 category clearance. Lt Cols House and Cowan will be the principal recipients of this technical information and will, in all probability, be the most freauent visitors to various AZC installations. I do not intend to distribute any documents received under this agreement to any other agency, nor disseminate this infor- mation to other members of my staff. If and when I feel it of paramount importance to the accomplishment of the mission of JTF | ms ° a SEVEN to have additional officers or agencies receive such information, I will so informyou. a: Yours sincerely, Tat : eproduction and nutibered distribution in local series are authorized when total additional distribution list is furnished the issuing officer. P. W. CLARKSON Major General, USA Commander 10SALAMOS | 01761783

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