sae eee LE SE i S. WHAT IS THE sr99~90 CONTENTS OF CALCIUM DERIVED FROM LAMB BONE, FETAL BONE, COWS MILK AND HUMAN MILK IN THE NEW YORK MULKSHHD? Method of Study Analyses of material from various sources, Principal Finding Expressed as d/m/gm Ca, the varied as follows: 799-90 contant a/d/em Ca Lamb Bone 7 ton t Cow Milk 3.5L 069 to 604 4 069 Human Milk Fetal Bone lof 7 rt 625 to 20 + te lo = 765 6, WHAT FRACTION OF THE DEBRIS ISSTORED IN THE ATMOSPHERE? Method of Study Atmosphere dust samples were collected at altitudes of 88,000, 40,000 and 200 feet, Principal Findings Data thus far suggests that apbreximately 1% of the fission product yielf is uniformly mixed in the atmosph#re up to 88,000 feet with evidence that]an undefined quantity of additional debris detonation continues to exist atmospheri¢ dust is considerably enriched in both Sr9? and Sr90, About UB of the. Sr90 yield is tentatively estimhted to be stored in the lewer 100,0D0 fest of the atmosphere,