SOae (3) The University of Tokyo group administered parent- ally a massive dose of ash to one mouse, and, following sacrifice 12 hours later, determined by radiography that radio-. activity was present in the mouse skeleton, The activity of the dose was not measured, The fact that the radioactivity was detected by the scientists in the skeleton of the mouse was. widely publicized as evidence for their conclusion that the patients were carrying dangerous internal deposits of radioactive isotopes, ' As individuals, the scientists seemed anxious to cooperate. In my initial conversations with them they freely asked for help and seemed gratified at some of the things that we : could do for them. My participation on the American team was limited to the radiological aspects of the case and only incidentally to the patients themselves, Unfortunately the nature of Dr, Morton's participation required that he be given direct access to the patients and this the Japanese consistently refused to grant, As the days went by and the Japanese became more resolute in their decision to deny access to the patients, other areas of the problem became infected by the uncooperative . atmosphere, This will become apparent in subsequent portions of the report, OFFERS OF ASSISTANCE TO THE JAPANESE When I arrived in Tokyo on March 22 Dr. Morton hdd al~ ~ veady offered to the Japanese the full facilities of the Atomic Bomb Casualty Commission. General Hull had likewise offered the facilities of the Far East Command, These offers were accompanied by a spirit of sympathy and the desireto assist’ the Japanese investigators in their efforts to evaluate the incident and to restore the health of the fishermen, At a meeting with top Japanese scientists and government officials on March 24, I made a further offer, in behalf of the Atomic Energy Commission, to provide whatever facilities were available for evaluation of the radiological factors involved in the incident. i repeated the assurances repeated earlier by Dr. Morton that tre wished sincerely to be of assistance, that our participation yas 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 facilities would be helpful to the Japénese, (1) Using a Cutie Pie, they measured the radioactivity of the Fukuryu Maru, These data appear completely satisfactory and prove to be in good agreement with measurements made with Ameri~ can calibreted equipment, 2 (2) They measured radioactivity 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. :