PRIVACY ACT MATERIAL REMOVED January 1948 Cantain,Draggerbtained thasprvices of Connender Sains ee of BuShips to assist on the organization and vlanning of this project. Commans er Se arranged to procure the necessary materials em to have them adequately calibrated at the Naval Shipyard Materiel Laboratory, Brooklyn, New York. This laboratory was alreedy carrying out an extensive ‘program. to study the heat sensitivity of certain coatings for use on Naval Materiel. Arrangements were made through Commander Wiener, USN, of the BuShips to use the same racks for exposing the plates that were to be used for the samples being exposed by the Bureau of Ships. Gamma Radiation Shielding. On 10 October 1947 the BuShips was advised that tests would be con= ducted by the Atomic Energy Commission which would measure all the physical phenomena associated with the detonation of an,atomic weapon. It was further learned that the armed services would lend logistical support and would be permitted to make additional observations provided they could beaiscomplished without interference with the AEC basic tests and without materially increasing the logistical support required. At this wfot “ time it was understood that a rather complete ‘gamma-ray shielding program proposed ‘bywhe AFSWP was includedgyin.the scientific program. . Accordingly, on 13 October BuShips submitted a letter to the Joint Proof Test Committee outlinging its proposals for tests to beconducted « Wank In this letter it was requested that the Bureau of Ships be furnished a report on the transmission of gamma rays through various shielding media. At a conference attended by SMMMe, Captain @gMIER of the AEC, and ala Section IX 29 PRIVACYACT MATERIAL REMOVED

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