“TLE SLOG” ant FESCRUNG IITs Marshall Islands Radiological TATE AGESaReEz RATT I-AD LAT Q3;72,31 Salzacyv Ir3eran ZTONTRACTOR NAME Zaft: Associcted Universines, ‘ne. vetarl Attacnments. ��, Tachnical Proereass. Technical 2 "4 oO iQ 3. AE NUMBER "ASK NO. 284 3NL NC 3 cone. rass in FY 1980, ta February 1980, a field trio was undertaxan 29 Japtan and Enewetak Islands, Emewetak Atoll and Ujelang island, Uijelang Atosii ts obtain baseline bodv-3urden data on the Znewetax sopulation ortor to chet rasatriation of Einewecak Atoil in ApTiL 1920. Pacsonnel sonitariag was accomplished snrough whole-dody counting and ves *o4.ecilsn oi sne Litar urine samples irom ali versons five vears of age and old ‘elang, » + - ~ nomrarcticipants in the wholewSedy counting program were favited da soewan ally analvzad far 32-90. amogrtaonic dara . to urine samples. Aporoximataly 400 urine samples were collected and are * ay 3eing speccrometricalliy analvyzedq for gamma anitters and vradiocheai- ta (+ orovicte @ addistionallv, tartiziztaats sravided paysical and nting was conducted with two indasendenc chair councing svstens acide datectar was nvositioned in front of a snlelded person. The solid angle of the decector sersisted collection oF shotons amitted from fhe ttunkx of an adult body » This geometry allswed safe anezy and agrass with com tartabie sansicivicy ra lative to che ded zeometry used in prior Iiald trios. Aporoxiaately 1:00 spectra were obtained from individuals on Japtan, inewecak nd Uielang Islands. These spectra were anaivzad for Cg-i37 and 4-40 usin calibration standards which best matched the sex, neisht and weight of the ser son. aAddisional analyses were veriormed to detammine the iraquency distribution scacistics for various ag@ and sex sudgroupings of the Sody burdens. Quality assurance was odtained through duslicate whole-sedv counts and renecitive point source Standard counts to determine the srecision and accuracy of the systen. During the July and Auguste 1980 field sris, whole=Sody counts and urin anoles were collected at ‘fajuro Atoll and Sili Isiand from former 3ikiat Atsli ren sidencs and from a comparison sopulacion. aAporoxizataly i200 svectra were obcained and 100 urine samples collected. fitty sercenc sf che snectra vera from oersons dno were residents and whole-bod7 counted oan 3i%ini Atoll in April 1980, 10 sercenc were from former 3ikiai Atoll residents noc counted DSefore and the remaining soectra were from a comparison group who wad never resided on 3ixtai Atoli. A qualicy assurance srogram sintiar to inact tape syed at Inewetax vas usec. Review of the aistoric 3Lxini whole-s0dy sounting data indicated no aifacts 32 sody~surden assassaenc due <5 reconfiguration of ine shielding and decactor. 7: =o secucive teasuramencs of a former 3ixini resident's Sodv Surdéen allowed computa: fan a2 individual long-carmm Siolagical removal tate constants. This daca aiong wich the techodology ‘were written up and issued in a orisary scientilic pudiicacion. Z sland there were former 3izini residents whose Cs-i37 ody c Tamained ne ese or increased. Reasons iar rnis nuclide Seing aresen=t in = va inveszizacad. This work showed chat these durdens vere vit daviations of the tean Surdan of ine somstarison sooulation exc