mahi PReT ee ITES a a[2 SRR ya ee be Sr-90 (me/mi*) sncdtactialte at aa tds EOE ee kh saab= elie lmbspaarites haat Phat ee rE tee ree ee ee SNS » ~ oO we ~ ieeAS y SAASSS ~; = ty : = a ss Fig. 7 Cumulative Sr-90 from Rainfall? Collections at Pittsburgh.