SECRET SyOA.bot | SACZOOIEYOPOE00D - This document consists of Copy No, ~~ ~ m SECURITY INFORMATION of 411911 January 15, 1953 17. 4 pages Series_A \y x AEC 597/9 wT o xs + wy Why ‘4 : Y \y = : The attachment has been submitted for circulation to ther Se ; OA Commission by the Director of Military Application with the f : 5 um a co following comment: "Based on Commission action on AEC 597/4, the in general except that the actual date for the first detonation will be set after UPSHOTKNOTHOLE when the rate of development of the models to be tested is established. Meanwhile, however, the rate of progress on Atomic Energy Commission support activities will be brought generally into phase with that of the Task Force preparations and. set so that the site can support the earliest That is, | one large detonation site will be prepared for Fall - 1953 in case development of one model exceeds expectations while completion of the balance of preparations will be programmed for February 1954." ATTACHMENTSIENCL ea g eeegeed shbactls ety c2a seeentes = = O k Paseo ERK Bae oo DEPARTMENT OF FNIPGY GFCLASSIFICATION REVIEW SIGUE REVI AUTIORD Fe E [mine pate: SéSO.2 SESat . ANGE . Secretary Commissioners General Manger Asst. Gen. Mgr. Mfg. . + 4.COORDINATE WOH: DISTRIBUTION , ROY B. SNAPP ce | SERETS 5/23/48| OTR (SPECIFY) ee ee REVIEWER DK . ie Secretary - COPY NO. DISTRIBUTION 1 2-6 7 8 COPY NO. . General Counsel Military Application Secretariat 9, ' 10 11+ 15 16 - 17 -RESEPIGPED-DATA— this document contains: restricted data as Gefiiwe in the Atomic Energy Act of 1946. Its transmittal or the disclosure of its contents: in any manner to an unauthorized person is prohibited, a & Lo i . Oo ) mo Director of Military Application has approved this . oe Ty 2 y , Ae Nay POR i Note by the Secretary e F apt SOA C) (/ .) } #4 ! gcs 1 “ my Sp yes OPERATIONAL CONCEPT OF CASTLE foreseeable date for first detonation. co. Bel S} a) WY ATOMIC ENERGY COMMISSION concept x OP Ot copy'No.d6 We . w 4 OLS PROCSOO/A) ge F x wi a o @

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