a ground. e . . -¢ + ' oe . These included the film badges for measuring gamma radiation as a function of distance, and the heat sensitivity papers, These stakes had to be driven along two radii on Engebi and on the adjacent Ne rE upwind islands. Shields consisting of steel plates and concrete blocks were fixed in position. At several stations racks were installed for the exposure of panels to measure heat sensitivity. In addition, special panels were prepared containing as many as 50 different materials com ¥. we 4Fett BASE OM ge FE waeyy sisting of papers, woods, etc., with different types of light filters in order to measure the spectral and time distribution of the optical radiation . Two test animal containers were positioned on land and two were anchored at the proper distances off shore, The heavy steel cylinders for the exposures of biological mtcrials at close range were located at several distances, Much of the work involved in these preparations was primarily mnual labor and could have been carried out quite satisfactorily with a working party under the direction of the project officer, The enlisted complement of TG 7.6 was limited to a small nunber of specialized personnel required Ge for other duties, oe the officer monitors when they were not involved in preparations for their x normal duties, =~ the enlisted canplement of a similar Task Unit. eo) ‘, is x ™ . oe +e Therefore it was necessary to obtain volunteers fran In future operations it appears desirable to increase : ~ . One phase of the pre-test operations of TU 7.6.6 consisted of deter- mining the sensitivity of the Test materials through normal exposure of heat, humidity, and wind. The biological exposure cans were located in position and painted or covered with a variety of materials. ae Moe - 70 - 7 Sap > oy wt @ ' ye =} hr Abe — “in Se NS Xe Sone were ce ee e ee nay ree eneenereemeeieee: Ss, > Go ae a z SS fas ee AonAt.LFye Sack ee rt i ae RPVAIS aEREpEY LSAscESk iv Seth ae ° wat