- de. « (MORAWK) Project 2.65 ~ Analysis of Fallout and Bese Surce - M. Morgenthau QRTECTIVE Torer the cloge-in residual ocntemination field resulting from the Mobavk) shot, For this event the project hed only limited participation, consisting of en aerial survey on M, Mtl, and M2 days, The survey ves made of the portion of Enivetok Atoll contaminsted to a significant amount by this event. included the islends between Engebi and Aopon. This Pertioular attention we 7214 te the residual conteminetion on Rojoru, Fberiru, and Aowon. The seesurements were taken by means of a probe on # long catle suspended below a hovering helicopter. The position of the probe was determined ty reference to charts and serial photographs. MSULIS Aerial ourvey readings taken on three successive days were corrected for meter calibration and corrected to H+] hour values as shown in Table 2.65-1 ty using the decay exponent of -1.10, This decay exponent was determined froz a plot of field dose rete reedings ve time for three of the ialands surveyed as ghown in Pig. 2.6541. These particular lalands vere obosen for thie plot because of their low background prior te the abot. H+] hour extrapolated readings for Eberiru Island ere shown in Fig. 2.65~2. BEST AVAILABLE COPY COR’ 1? o L Sah Ll oe