ENCLOSURE TIT UNITED STATES ATOMIC ENERGY COMMISSION WASHINGTON, D,C, February 3, 1955 Admiral Alfred C, Richmond Commandant U.S, Coast Guard Washington, D.C, Dear Admiral Richmond: The purpose of this letter is to request that a suitable Coast Guard vessel be made available to the U.S, Atomic Energy Commission for the purpose of accomplishing the special mission hereinafter described, The Commission is in the possession of scientific data which strongly suggest that radioactive debris from Operation CASTLE, originally trapped in the North Equatorial Current, are now moving via the Kuroshio Current toward the islands of Japan and Formosa, It is vitally important to the Commission's scientific program and to the future use of the Pacific Froving Grounds to assess the possibility described above and to determine with greater precision the fate of radioactive contamination from the detonation of nuclear and thermonuclear devices in the Pacific, We believe also that should levels of radiation significantly above natural background be detected in Formosan and Japanese waters, important political consequences might ensue regardless of the fact that the activity is not considered to be harmful to heaith, Discussions with the Office of Naval Research and the Office of the Chief of Naval Operations (Op 36), and who we un- derstood were in contact with Captain C.G. Bowman, Commanding officer, Floating Division, and Lieut, D.A, Webb, Testing and Developmen’ Division, U.S, Coast Guard, led us to believe that (1) the Navy could not provide a suitable vessel due to prior commitments, (2) a suitable Ccast Gvard vessel, an AVP, the USS Matagorda, was available to the AEC at Pearl Harbor, and (3) the procedure to obtain the vessel was a formal request to the Chief of Naval Operations, Hence, a letter to the Chief of Naval Operations, a copy of which is enclosed, (with attachments), was prepared and dispatched, We now understand that the Chief of Naval Operations prefers that the AEC make direct application to the Commandant of the Coast Guard - which is the purpose of this letter. It is planned that the proposed survey be a joint undertaking by the AEC and the Office of Naval Research, We under- stand that by letter dated January 28, 1955 the Office of Neval - 5 Enclosure IIT

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