, . CASSTLE BSG me NAVAL OCEAN SYSTEMS CENTER SAN DIEGO, CA 92152 RRH:ykp 1603/6-79 25 Jan 79 MEMORANDUM From: To: R. R. Hammond, Code 16038, and W. W. Perkins, Code 5221 Captain Andrew G. Nelson, Commonwealth Bidg., Room 772 Subj: Gamma Dose Estimates for PATAPSCO Crew Ref: (a) NNTPR itr Ser 981TA/1238 of 28 Dec 78 Encl: (1) 1300 Wilson Boulevard, Arlington, VA 22209 Estimation of Dosage Received by Personnel of USS PATAPSCO (AOG-1) following the BRAVO Shot of Operation CASTLE. 1. Enclosure (1) contains the estimates you requested (ref. a). The copy you requested for SAI is also enclosed in its addressed envelope. Your review and approval of the classification of appendix A extracted from the San Bruno Archives would be appreciated before mailing in this manner. We believe appen- dix A is now definitely unclassified if it indeed ever required security classcation above official use only. Another letter will follow shortly covering the many items which we have pending. Please call if you have any questions. Cole Kerman Wydeme W. W. Perkins 68103