aa | PRIVACY ACT MATERIAL REMOVED of Yards and Docks, and the AEC as specimens of shielding. These were eventually considered too complicated however and it was proposed that a number of plain steel shields madie of 1 inch steel plates, 1 and 2 feet square, cavable of being built up by bolting together into any desired thickness be used. It was also requested that concrete slabs, 3 inches in thickness be manufactured at the test site. In addition a quantity of angle iron was procured to be used in mounting these sample shields. Assembly of the material was made at San Francisco, Naval Shipyard under the direction of Lt.. Ws. This material was then delivered to Terminal Islami for transport to the test site. The film methods of measuring the amount of gamma radiation was selectedas being the most practicable for the purpose of the test. It was decided that the film badges for all gamma measurements be procured by the AFSWP. e-em of the U- S. Bureau of Standards was placed under contract by the AFSWP to calibrate and read film badges for all gamma radiation readings. . Decontamination and Heat Sensitivity Studies. The problems associated with hapdling and disposing of radioactive materials resulting from atomic bomb bursts had been one of great concern to the Navy for the previous 15 months as a result of Operation CROSSROADS. The Bureau of Ships had been assigned the responsibility for development of ship decontamination measures shortly after Ope ration CROSSROADS . A new project was officially submitted by the Bureau of Ships to the Joint Proof Test Committee on 13 October 1947. Section ix At a conference held 31 PRIVACY ACT MATERIAL REMOVED = ad

Select target paragraph3