QErioN HOT tt tart - OAIEY Pek UCRL-12273 ‘ ESTIMATE OF RADIATION DOSE TO THYROIDS OF ADlEegy THE RONGELAP CHILDREN FOLLOWING THE BRAVO EVENT Ralph A. James Lawrence Radiation Laboratory, University of California Livermore, California December 16, 1964 ’ ABSTRACT An estimate is made of the radiation dose to the thyroids of Rongelap children following the Bravo event of March 1, 1954. The available experi- “mental data are used to estimate the dose under two alternate assumptions of mode of intake: . - (a) all of the intake was by inhaletion, and (b) all of the ' : intake was by oral ingestion.~ It is concluded that the most probable dose to : the thryoid of a 4 - 4 year old girl is in the range 7OO - 1400 rad. Owe oy - BEST COPY AVAILABLE oO (la sve ors O— BpCovet GB Atlee S? eetveg oe Carter. Co Goves tOu Ghee Ao pete @Say Poy LEprecte ae (Lies we Ce LECeres ot 4 OD or Lad = os Paz acklo PEELE f hat lS ces oe