47 small version of the counter in use at Los Alamos now for studying the content of a whole man. With the 100 channel analyzer, peaks were found at about 50 KV, 100 KV, 1945, 210. Most of these, I understand, are not identified. MR. HARRIS: This is just gamma spectrum stuff, and this is not extremely good sensitivity in high energy gamma rays. There were essential peaks that we could not identify. This was 145 kilovolt peak and a 210 kilovolt peak. The rest fell in line pretty well. DR. CLAUS: Washington, D.C. - Alderson Reporting Company 10 11 which is iodine 131, one of about 500 as ruthinium, and there 12 are others presumably related to the barium;slithium units. 13 In addition to the fact bey were able to observe iodme as a 14 gamma activity. 15 be distilled of f and observed directly. 16 Iodine 131 worked out to 19 microcuries for the Americans. 20 you explain that? 21 MR. 22, 23 The 1-131 equivalent at the time of weighted for the beta activities, and put in terms of 25 Peewee TDN BSG, th te In this equivalent -- would plus the small contributions from mthe tellurium mothers 24 wry at HARRIS: .56 microcuries and 17.5 fallout is meant the total amount of all the iodine isotopes ARC Ten These were the natives, and these were the Americans. 18 pect It was a volatile component which could I think I might now make a table. 17 Genartmock cy ™ Kistoriaas | The one at 360 kilovolts, a strong one 4 Y F equivalent I-131. Those are millicuries, Walter. ,