A . = 7¥ NCLAGSHad) planning of this project. - necessary materiale and to have them adequately calibrated at the Woes. | an t } aN . NAL Y= f Camzamler langer arranged to procure the Naval Shipyard Materiel Laboratory, Brooklyn, New York, This laboratory was already carrying out an extensive program to study the heat sensitivity of certain coatings for use on Naval Materiel, g “ft oAHY &! Arrangements were made through Carmander Edmund J, Hoffman, USN, of the BuShips to use the same racks for expos‘.g the plates that were to be used for the samples being exposed by the Bureau of Ships, Ganma Radiation Shielding. On 10 October 1947 the BuShips was advised that tests would be conducted by the Atomic nergy Conmission which would measure all the physical phenonera associated with the detonation of an atomic weapon, It was further learned that the armod services wowld lend logistical support and would be permitted to make additional observations provided they could be accomplished without interference with + the AEC basic tests and without materinly increasing the logistical eh support required, At this time it was understood that a rather é a yeAr ip! it . mee BS ' eh . ‘ as o x a . ve tod we tae conplete gamma-ray shielding program proposed by the AFS/P was inclw'ed in the scientific progran, Accordingly, on 13 October BuShips submittod a letter to the Joint Froof Test Committee outlining its proposals for tests to be conducted. 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 Dr. Frama, Captazr. Russell of the AEC, and Captain Howell, USN, Canmander ~ 28 — ang * ~