UNITED STATES PACIPIC FLEET Headquarters of the Comander in Chief In reply refer tc: CINCPAC File FFle-l Abe} Ser 001355 32 Oct 1953 From: Tor Commander in Chief, U.S. Pacific Fleet Commander, Joint Task Force SEVEN Subj: aeeet Hazards, in the Marshall Islands Area During Cperation Ref: (a) CUTF Secret ltr J=3/903 X 729.3 of 30 Jul 1953 (b) (c) l. US AEC New York Operations Office Report NY0-4522 on "Radioactive Debris from Operation IVY" of 28 apr 1953 CINCPAC Secret ltr FFl-1 alé=1 Ser 0035 of 22 Apr 1952 (4) CUTP 132 Secret ltr of 14 Jul 19523 Subj: "Safety Measures (e) CINCPAC Secret ltr FFl-l Aun} Ser 0073 of 25 aug 1952 Operational Phase of IVY. Reference (a) sets forth preliminary planning of CJTF 7 regarding rediological safety measures pro, ,osed for Operation CASTLE in relation to these iaplemented for Operation IVY, and requests CINCPACFLT comnants or suggestions in order that task force planning aay be realistic and oatually agreeable to all concerned. For convenient refercace, the task force plan is summarised in paragraph 2 bulow. a. No special efforts will be implemented by JTF 7 in support of the following safety ceasures: (1) Atemis cloud tracking outside the immediate danger area. (2} Sampling of drinking water on distant atolls. (3) Svacuation of native populations. b. The conslusion to discontinue the above safetymeasures ( estab= lished for Operation IVY) is based on the following factors: (1) Olecussions between cognisant sections of both headquarters during February 1953. (2) Reliance on the substantial radiological documentation ob= tained for IVY in reference (b). (3) Apparent unrealism in the assumption of health hazards of & magiuitude conjectured for IVY. Incl 2 to TAB "C" . e-3