Status faport eo Duse Reassessment for Populations on Rongélap‘and ‘uetrsh followingexposure tu fallope from the BRAVO incident(March 1, 1954). © | Introduction: ornamental ea a Incidences of thyroid nodules, benign: and naiignant, in!‘che:'exposed ‘populationg of Uticik and Rongelap has indicated critical differences injcok gspo ence: between: nudule incidence and thyroid doge for the populations (Table/1) xothe eatimated ‘a external dose received from thestime fallout’ begantp the t Nevacuatton shows: 13 times that for the Ucirik popylation (14 rads), and tiie ¢ yest Ose was abuut -: 10 times larger, whereas the incidence of.athyzoid.,nodules” i ‘heBiePspputactons , BS. sateen amr og wee ae that ‘the Rongelap population received an external doge (175 fadg)“which: was: about:- ence eon er nm ‘1 re - | A. i A preliminary study has indicated thac the erstcits Fer@e Of: dnvegetgetion thai could shed light is the period: ving fallout. and. evacuation, whereas the Rongels population returnedonly a ter’threeiyears, require In addition, the fact that che cuation:nfo&sboch: thevlelands Utirik population:re urned'withint20"daya:followings: that we look closely at the Utisik population in,tepmafof a}‘Lpngerexpogure perio both internal and external. Fuyther’studies would, |therefo te“pave;corcongent race on. the reexamination of all aveslable data in reports ‘$ssued by:‘vayioug agencies during that period, consultations with scientific pergonnel i volvedi‘ateshat: tine, . identifying the areas of uncertainty, and using appropriat computer91roarane to analyze the data, peers cemmmpee see te 2 were not significantly different The end result will cnable us to look for ‘correlario the incidence of thyroid "ut and the reasscosed:dgee sacdnaces : Objective: mo .. “ Oe Ge 7. & a ye To examine the external and internal dose estimates ‘9 che wonaeheni« populations following the "Bravo" test in order to; a. b. ce. increase the confidence in the reported values. ya * test the hypothesis that radiation effects can be: translated - into meaningful dose estimates look for correlationship between the thyroid cancer cases and the reassessment dose estimates (if any). Method of Study: 1. Literature Search: such as; a. Weapon Test (WT) c. Reports frou various other laboratories (University of Washington, ere), b. 2. This would require examining the various research reports Naval Research Defense Laboratory (NRDL) Reports Personnel Contacts: Efforce will be made to contact as many of the scientists and technical persons, who were involved in the early years for information on measurement techniques and analytical procedures.