FIGURE2 RADIOACTIVE DECAY OF YTTRIUM 90 or MILKED FROM STRONTIUM FRACTION EXTRACTED FROM SOIL BY HCL . ttr), LM 96) tt ve 26 re> ~ r — ~ a ~ oe . — ~s ~ ~ J wd ~ ~ ~] a] ~ ~ re ~ tb ~~, “me ~ . = os nme “= 4469A ~ ~ i a = ~ ~ nme - — to ss . ~ 44698 S277A 62778 ~ ~ 4 2 , 498. ~ 96. Fe 124 HOURS AFTER SEPARATION S277C 172 / f" fe 4 "a —* A ”ee Oona nearness pi, oe ee eR A iia cs. sca