LPL EM PONS tte ew reee re ae ik :ICE }por res PN ay PRMSS enh iRATED ; COTE ie findyt ‘, Lotter to G a=! 24, Horch 1954 As you have cortainly heard, after BRAVO there was considcrable fall-out on the northern Marshalls. The 28 weather island personnel from liongerik and anproximately 275 natives from Rongelap and Utirik were cvacuated to Kwajalein, At Kwajalein, the AEC has sct un a medical group under 7.1 to study the effocts of the heavy radiation fall-out on the natives and our weather people, The dosages range from approxinately .. at Utirik, at Rongerik, at jilinginac, and at Rongelap. ft the present, all those cxposed are symptom frec and only the Rongelap group are showing any signs of radiation damage othor than changes in the blood counts, ftpproximatcly 25 Rongclap people were cpi~ lating on the 17th day, post-shot. In addition, they wore snowing a skin rash on the scalp and folds of the neck. The relationship of the rash to radiation has not beon cstablishcd but is suggestive of BETA injury because of its distribution and association with cpilation. The mean white blood counts arc down about 3,000 cells on ail the individuals from 40-150 R. LASL personnel are collecting urirs samples to detcrminc if a significant amount of the radioactive fall-out has been absorbcd into the body through the mouth or lungs. Wit! the exception of the lowered white blood count, the USiF group have shown no signs or symptoms of radiation injury to date. I will continuc to monitor this program. . The error in fall~out quantity prcdiction which caused the fall-out to concentrate on the Atolls to the cast of Dikini ccuscd General Clarkson understandable concern over future fall-out possibilitics at Mniwetok. With this in mind, he had plans drawn un for the evacuation from Eniwctck of those individuals who can be termed radiation sensitive, such as sampler pilots, sample removal personnel, dccontamina*ion personnel, ctl., These plans outline the action neccessary to evacuate thess scople to Kuajalein on the first indication that a measurable amount of fall’ would occur at Eniwetok, Thcse cmergency proccdures wore firmed up on visits with admiral Clark at Kwajalein, In addition to this air cvacuation of personnel to Kwajalcin, other plans wore drawm up in the event that ars personnel would have to be ovacuated from Eniwctok. ate cnough that these plans will not be needed. I hepe we are tostua- The Project Participant Program scoms to be working very well. Youever, dut to improper bricfing of a controller aboard the Comiand Ship, the first sroup of observers did not gct to sce the dctonation. It wes planned that ct H-hotr -therebdéfvantaircraft would be ap x oximatcly sixty miles owt in a side aspect position. Three minutes efter h-how tacy would turn to a tail aspect until after blast arrival ov Heolud seven — 3 TAB NO. 19 3..322°SRS 107