oe ufe Charles L. Dunham 3. Jaobacy 16, 195% <A third study would be designed to determine if anges in skeletal growth and metabolism have resulted from their ragiation exposure. A tracer technique using sr85 would be used to measurg the size of the exchangeable calcium pool and the rate of acretion of Jbone salts (ref. Bauer, Ce He and R. DG. Ray, Kinetics of Strontium Metd@bolism in Man, Je Bone and Joint Surgery 40:127, 1958). This offers|the only technique available which givecan immediate index of bone growth and netabolism. By using the whole body counter with thiq technique, the administration of only a very low tracer dose of Sr85 quired. {5 uc) is re- It is proposed to do this study on_5 exposed Bnd 5 unexposed Rongelap volunteers. -_ It would be appreciated if you can let me know your defFision on these proposals (in whole or in part)’ at youryConvenience. [f you concur, will other approval be necéssary from other agencies, Trust Territory? particularly the Sincerely, “‘Bet~ Robert A. Conadd, M. De hlb [is Enrany ~(foupnnny met. A TEKel of Pham — |