1336 . FALLOUT FROM NUCLEAR WEAPONS TESTS 20 fold for strontiua°, zinc® was readily detected in samples froa the March 1958 medical survey. ‘ The estimated mean body burden at equilibrius for cesium??? 16 about 1.5 microcuries or about 1/6 of the tolerance recammonded by the International Commission for Radiological Protection for non-industrial populations. For stroutiua? the mean body burden of the exposed Rongelap group in March 1958 vas estinated to be tvo millimicrocuries. This is about nine percent of the expected equilipriun value of 23 millimtcrocuries. ts about 1/5 of tolerance. The equilibrated strontium”? burden The estimated mean body burden of zine? for “Rongelay 3 dects fn March 1958 48 about 85 percent of the equilibration value of 0.6 wicrocuries and the equilibration value is 1/70 of tolerance. 5007111