STE-CoRE-CR-E-? SECURITY INFORMATION UNIVERSITY OF CALIFORNIA LOS ALAMOS SCIENTIFIC LABORATORY P.O. Box 1663 LOS ALAMOS, NEW MEXICO 16 December 1952 TO: Brig. Gen. K. E, Fields Division of Military Application Atomic Energy Commission Washington 25, D. C. THRU; N. E. Bradbury, Director, FROM: A, CG. Graves SUBJECT: OPERATIONAL CONCEPT OF CASTLE SYMBOL: J-15163 » LASL a. li General: This concept is intended to indicate a feasible plan for a six shot Castle operation and to serve as a basic planning guide on which detailed plans can be formulated. Caution must be exercised to the extent that the devices to be tested are still quite tentative and changes in this concept may become necessary. 2. The Castle Schedule - The following is the proposed pian of detonations: 61 1G) § gee G@ A) + -—RESTRICTER-DAPA— This document contains restricted data as defined in the Atomic Energy act of 1946. Its transmittal or the disclosure of its contents in any manner to an unauthorized person is prohibited. -~l- . a _ 4 €&

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