v Japanese scientists and government officials on March 2), I made a furthe offer, in behalf of the Atomic Energy Commission, to provide whatever . facilities were available for evaluation of the radiological factors im volved in the incident. I repeated the assurances repeated earlier by Dr. Morton that we wished sincerely to be of assistance, that our icipation was not motivated (as some Japanese suggested) by the opportunities for scientific studies, and that whatever data we obtained would be turned over to the Japanese investigators to be used by them in any way they saw fit. At this point it would be desirable to list the radiological studies which had been already made by the Japanese. These studies are of interest because they indicate the extent of Japanese capabilities in this field, and define the extent to which our factlities would be helpful to the Japanese. Maru. (1) Using s Cutie Pie, they measured the radioactivity of the Fukuryu These data appear completely satisfactory and prove to be in good agreenent with measurements made with American calibrated equipment. (2) They measured radicactivity of the fish and fishermen, using portable survey equipment. However, their equipment was not calibrated and their data were given in counts per minute as determined by the original factory calibration. (3) They determined that the ash recovered from thd vessel was radioactive using an end window Gi tube and scaler. Their counting systen was not calibrated and they reported counts per minute with no knowledgy of the factor required to convert their data to standard units. (4) They completed a qualitative radiochenical and reported the following: Sr 89, Y91, Zr9S, Nb9Se, is of the ash RulO3, Ruldé, RhLO6, Sbl27, Tel32, TL32, 1232, BalsO, LalbO, Cethl, Celuh. (More iectereo have completed a semi-quantitave analysis for a few isotopes). (S) They had scanned the bodies uf the fishermen with a GM robe. (6) earlier. They nad edministered «duse of ash to 1 mouse, ad described tga 3 “ iA - ; (7) Using an imersion type GM tube, they had demonstrated radio- activity in the urine of 3 fishermen. As before, their equipment was not calibrated and the absolute activity could not be determined. With this as the status of their investigation at the time of cy arrival, and following several hours during which I acquainted the Japanese with our experience in this field, I offered the following services to then: (1) Complete radiochemical analysis of 24 hour urine collections fron all patients. In view of the importance of this analysis in evaluating the status of the patients, I urged that these samples be furnished immediately and assured them that in one week it would be possible to give them a report for the constituents of principal Qlological importance, I explained the need for serial samples and suggested that collections be made at weekly intervals. They seemed amxtious to accept this service. ~ wu ¢! | | |