DRAFT 12 16 Mar 54 RADIATION Naval station, Kwajalein, reports signs of radiation injury to the Rongelap group with a "modest decrease in white blood cells.". During the first 48 hours two reportedly vomited and others experienced nausea. "These residents received approximately 125 r. cumulative."” 23 Mar 54 MEDICAL RADIATION The Rongelap Islanders are the only Marshall Islanders now showingradiation sickness symptoms, including hair loss, skin and mucous membranelesions, and blood count averages about two-thirds of normal.” 26 Mar 54 CONTRACTOR RADIATION The University of Washington Laboratory of Radiation Biology (LRB) participates in the first expedition to Rongelap Atoll to collect biological samples for measurements of radiation contamination.” 1 Apr 54 ADMINISTRATION MEDICAL Graves requests the LASLdirector to contrive an excuse to call Shipman back to Los Alamos as soon as possible. Shipman is returning in a few days.” LASL Director Norris E. Bradbury replies that 13 Apr 54 MEDICAL PLUTONIUM RADIATION 9° — : Fe Dt. Thorhas Li Shipman of LASL reports that the analysis of urine of Rongelapesé and' dir weather service persorinel exposed to Castle fallout shows aninitial total’ bodydoseof iodine" of about 50 microcuries accompanied by shorterlived iodine isotbpes equivalent to about-5 millicuries of iodiné'*’ at the time of uptake. The estimated total integrated dose to the thyroid is about 130 "rep" of which 50 "rep" is from iodine’. Shipman gives estimated body burdens of other nuclides; he finds plutonium as less than one-half of the maximum accepted permissible amount." 20 Apr 54 CLAIMS Prominent Marshall Islanders petition the UN to end the Pacific test operations if possible, but, if tests are necessary, to take all possible precautions to protect the health and welfare of the residents. 22 Apr 54 ADMINISTRATION MEDICAL RADIATION According to JIF-7 Commander Gen. Clarkson, although the Joint Chiefs of (3 Cs) Staff (CS) directive for Castle "is silent on responsibilities" for the radioactive exposure