SUBJECT: Radlological Survey of Downwind .tolls Contaminated by BR 8 Mareh - 1000 = 1800 Two partics in smll teats surveyed Living ara on Rongolap Ialand and castorn half of Rongclap toll - . 9 March = O700 ~ 1130 Two partics in emll beats proeceded from the 7 . which was stationed outside Utirik jtell and surveyed Utirik and ion Ielands, tho main islands of the jtell 9 March ~ 1500 = 1700 Onc party in a small boat landod on tho outer reof af Bikar Island and surveyed the island, tho onl: large island of Bilar Atoll. LO March ~ 0700 = L100 Two partics in small boats preeceded from the 7 which was stationod cuteide Rengerik atoll and survey Eniwotak Ielnand (whore tho Task Ferco's Units had bccr stationcd) and tho othcr important islands of the sto: 10 March =~ 1430 ~- 1900 Two partics in emill boats proeeeded fromth: If which was stationed outsido Alinginac toll and surve: tho inhabited islands of tho jtoll. lL March - 0700 = 1400 Onc party in a emall boat surveyed the northworn dalonds of Rongclap itell and one party recheck: the living aroas on Rengolap Island and ostablishced a2 reference lecation for firture decay masurcoonts, 12 March ~ 0800 Survey tcam arrived Mnimotok Atoll via DDE. be Tho following personnel from tcst projects in TG 7.1, TU 13, scrved as mombors of tho survey tcan: Horbort Scoville, Jr. TWel3 Staff Richard Souls Malmacr Stropo Project 2.5a Projoct 6.4 Richard Rast Projoct 2.1 Tho USS NICHOLAS (DDE 449) supplicd boat crows under the direction of LT Cliffor Prink, Exocutive Officer, for surveys. 5. Ingtrosentaticn Radiac ect Ai/POR-39 was solcetcd as the instrimmnt to be uscd in the conduct of tho survey. Five (5) cach of AN/PDR=-39 wore crlivvatcd with an 8C Curie Co™ source twenty-four hours bofore doparturc. Th: culibration yiclécd = scro variation botwoen instrummts - any scalo. Upon cross chosking three of these instruments, (a point of actual survey) in a radiaticn f1:ld of 0.320 -/tz it was found that all threo instruments gave the samo reading. Theso survey actors were subject to prolonged use under adverse condi= tions of dampness (to tho point of aca watcr splashing over thea), salt ¢crosit , all instruments opceratcs and continual rough handling, With ono oxecption . On tho final day it was fo: io cfficicntly for tho duration of tho operation = a od