OFFICIAL USE ONLY ITI. RADIOCHEMICAL ANALYSIS Tables Twenty-one and Twenty-two show the rediochemical analysis made by AFL for the 1954-1955 surveys> and Tables Twenty-three, Twentyfour and Twenty-five for the July 1956 survey.! In two pools of 19 and 15 feet fish muscle samples collected in late July 1956 and analyzed by AFL, no radiostrontium was found. Tables Twenty-six and Twenty-seven show the radiochemical analysis made by NRDL for the February 1955 survey,» and Tables Twenty-eight and Twenty-nine, Thirty, Thirty-one, and Thirty-two for the February 1956 survey. Tables Four, Five, Six, Eleven, Twelve, Sixteen, Seventeen, Twenty, Thirty-three, Thirty-four, Thirty-five and Thirty-six show analyses by HASL. 1 Cs 3T accounted for an appreciable portion of activity found in most of the plant life. However, in terms of a potential biological hazard the strontium-90 activity is of most interest. At one year post detonation NRDL reports: "=--In muscle and viscera samples of the animals from Rongelap, Utirik, and Rongerik, gr09 contributes approximately 0.5 percent of the total beta activity. sr7°1s present in an approximately 1:1 ratio: with or°?, Since the Hunter and Ballou calculations indicate that gro? and or? each contri- bute about 2 percent of the total beta activity at one year after ~~. fission, there does not appear to be any fractionation of radio-strontium ‘into the soft tissues. As expected, most of the internally deposited radioactivity was found in the skeleton. OFFICIAL USE ONLY