| before, during and after "EASY" shot. This test presented an opportunity to combine It measured pressures, typical operational photography with known structures and structural damage result— also provided a means of training personnel in predicting ing from blast and incendiary effects of an atomic weapon. The addition of Low- ll pictorial reoblique pictures gave additional details of damage and also an overa The accomplishment of these objectives was realized cord of the results of the test. and a group of excellent pictures was obtained. 8, FILM FOGGING STUDIES a. The last project of this program was.a survey of the cffeets of film fogging as a function of nuclear radiation dosage, of the Strategic Air Commnd. shot. It was undertaken at the request The main experimental work was performed on "GEORGE" The film was Air Foree types "N" and "L" and it was cxposed to radiation under simulated operational conditions, Loaded A~5A magazines were placed at four similar stations in the Strategic Air Command RB-29 and the two (2) WR+29 manned samplers. Two magazines were placed in cach of the AEC drones, one in the bomb bay and one in the radio compartment. Ten (10) mgazines were plaecd on the ground in the vicinity of the explosion, with cach film type represented at five Locations. b. Early inform:tion on the film that has becn developed indicates that the film density (fogging) increases with the dosage, that in the lower dosage level the readability of the filn is good, and that "L" type film is more dense than "NR type film for an equal dosage, However, "N" type film shows more mottling. Also, it appears that there is more random fogging on film carried in bomb bay and unpres-— surized or unscaled compartments, probably duc to particulate contamination, dosage range was from about O,5r to greater than lOOr. The The final GREENHOUSE report will. cover not only the complete results of the experiment, but will also correlate thein with the results of other film fogging studies made by Los Slamos Laboratory on ather shots, Soa CPE Ape a -- ER 2 bars dR a. hE cst AUGHG ENERGY AOT —~ 8