CONTENTS RADIONUCLIDE BopDyY BURDEN EVALUATION... 0 :cssceecesseseseceege eee teteterencetnanes 44 Trntrodction... cece ccectenetneesneeeetneeseeteseaes dice vstecceeecenecteteeeneeeeeeeseseaeerateneees 44 Estimation of the Internal Radiation Hazard... ccc cee cneeceettetseeenes 45 Experimental Procedures..............0ccceecceceeeeeccee ceeteseeneeeeeescnaesseetsaeesseaecnaeeaes 45 Whole-Body Counting.....00000.000 coc eee cee cneeecesesneneeseepeneecensesniuesnetienes 45 Analysis of Gamma-Ray Spectra... cccecececeeceeeeeeseeeseeeetereeeeeneeneepntennens 47 Radiochemical Procedures...........0cc.ccccccesssesserseeeeeeseneeseeetenecesenesnenseeaeseeseatens 49 Results and Discussion. ......0..0...:..cccceccescceceesceseteeeeeseeecasenseteciecsessecausseuiecnesseraeeeees 49 Environmental Estimate......00....c0:ccccssssecessssessssevssvesseessevecesefousessssuieesssvesensecse 49 Radiochemical Analysis of Urine.....0.0..0.0.c cc ccececceceeceeceeceeeneeeeeceseeeetenatenes 51 Whole-Body Counting With the GammaSpectrometer........0....0..0....0 53 SUMMARY AND CONCLUSIONS... ccccceececseseeneeeeteseneeecesenaesessceaeeceereuecaeseesecaeesesaseaeees 55 Importance of Medical Surveys.....0..0....0.ccccccceseseeeeenseeeecneeneesaeeeteteeeesensensesaeees 58 ACKNOWLEDGMENTS........ccccccessescesceceescesesesenseecesesceaeesecaceesaenscaeeaecevaeeaeceeeecresstaseenties 59 REFERENCES ..00 0.00.0 cccccccccesc cece cecnee te ce se eeee ceesaeaeenessuaesaesersaecagecaesevongsaacieevaesisevseseeeeenes 39 APPENDIX 1. Rongelap Blood Counts..........00..0.. cc cccceeceeeeeceneenseteeeeenseeseeeeeneenseaeeaees 61 APPENDIX 2. Ailingnae Blood Gounts.....0.00..0.cccceceecseeeeeseteeeeesteetneeneesseceeeeereteeeeees 62 APPENDIX 3. Hematological Findings, 1959.00.00... ccc ceceeceeseeseeneeneeeeseeseeseessessens 63 APPENDIX 4. Hematological Findings, 1960.00.00... cc eecccccsesceeeeeceeeceeeeeeeaeeseeseenes 68 APPENDIX 5. Individual WBC, Basophil, and Alkaline Phosphatase, 1959-1960.. 70 APPENDIX 6. Blood Groupings and Haptoglobins, 1958-1959, and BFT and Cholesterol Levels, 1959...cccccscssscscssssssessesssssssssssesee _ 74 AppPENDIXx 7. Cs*87 and Zn® Body Burdens...........0..0.cccccccescesecsseseeceteeseeeseesseseease 81 APPENDIX 8. Urimary S10... ececccececeeeesceneeeceneneesstensacveccaeeaeatereaaeeqeeeeaaeereeeteats 83 AppbeENpum.A Note on the Vegetation of the NorthernIslets of Rongelap Atoll, Marshall Islands, March 1959.00.00. v 85