4 ey PECLASSIFIRD * - 5.0. 12958, Seo. 3.8 BLA SLIDES 2G —S-E-€--E-F 412059 onerenn By (Q40 /SR_Date[Ase oo _—— SECURITYENFORMATION AEC 597/28 November 18, 1953 COPY NO, | we ATOMIC ENERGY COMMISSTON CLASSIFICATION GUIDE FOR OPERATION CASTLE Note by the Secretary 1. The attached Guide and letter submitted by the Office of Classification are circulated by request of the General Maneger for the information of the Commission. 2, The Office of Classification advises that this Guide, has just been placed in effect, has the concurrence of DMA and AFOAT-1, 4p % he i and is consistent with the topics of the oon Classification Guide’. 9 zh 3 a sf couection L429 4— 1938 lees ps ° apes zoey so “DISTRIBUTION e)Se ce e226 Rie GSss5ee Secretary Commissioners General Manager SERRE RTS >| nin ie General Counsel Biology & Medicine ot Industrial Dev. SI255229%5e| & — 6 = ; Asst. Gen, Mgr. Adm. Classification Information Intelligence = Military Application a Research % Production 8 ROY B. SNAPP Copy 13 - 14 15 16 - 18 19 GEC “an. 2) 6Re Wnen separated from enclosures handle this document aS....... —-RESERECTER— SESURTTY INFORMATION 20 - 21 22 23 Santa Fe Operations e7 - 29 Secretariat MURA FF Ca Ste 8 9 - 10 ll - 12 2h - 25 San Francisco Oprns, open Secretary 1 2-6, 33 7 Security 26 30 - 32 a CTH OM Lt ee, rf a DOE Order $490.28 O TavitaCon : U7 ; : —RESPRLopEDpagal’5/23/95". ad ‘ me a This document contains restricted data as we * exmecaned defined in the Atomic Energy Act of 1946, _ Its transmittal or the disclosure of its — contents in any manner to an unauthorized persti is prohibited. GD. 12968,Beo. 3.6 pHOLLT ZOOGH ice Dote LBL mh Bira 5 epi n BOX No. box HOG ; Classifreck slz se i abe cs gee reese ye % wy z,2zee MAL — College Faek Poe 326, OfRE of,rcreto ¥ k "Joint AEC-DOD REPOSITORY oA OS PROCOOO/S 7 heusor FogE anbAc UTZ | |