CONTENTS ~~ Pages SCOPE OF WORK AND PRINCIPAL FINDINGS . . 2. 2. 2 1 ANALYT ICAL PH CEDURES ® e e ® s * e ? ° e e * * « «© © © ofe «© o e o * o 6 q e * 1 s 6 THE HEALTH & SAFETY LABORATORY SUNSHINE EXPERIMENTS. ...f... 1d Validity of Data Prom the Monitoring Network ....q4...- ill Retention by Gummed Films of Particulates in Simulated Rain. 15 Fractionation of Radiostrontium in Bomb Debris ...f... 19 Studies of Factors Involved in the Biological Uptake of Radiostrontium.... «eo ee ee ew we we oe wee Se Materials s e e * eo ® e .. 5 2 0 © e e 2 ® . * * 27 © 2 ew oh © we 30 ee ew eo be oe Sh Comparison of Radiostrontium in Various Biological * e ° e e a a e e e Atmo spheric Storage of Strontium Relation of Atmospheric Samples to the Residual Activity from MIKE. . 2... 2. ee eee eo Evidences of Atmospheric Storage in Fallout Data... 6 .. . 37 Estimate of Future Fallout, Based on Atmospheric Samplbs. .. 37 GENERAL CONCLU SIONS . e e e e e * ° a o e e e ® e 8 e ® . ® 6 RECOMMENDATIONS FOR PUTURE STUDY . 1. 2. 1 0 eo we we we ew we REFERENCES . 2.1. se se eee revere wc ewer ett e e¢6¢ Lo he we Ul et oe « U2 Appendices A. Analytical Procedures , . 2.0 ee eee eee eee dee e UD B. Estimate of Collection Efficiency: of Filters Ysaed in Jet Aircraft. . 1. ee see eevee .. eee e e 6 sae We e e 69 C. Tabulation of Analytical Results. D. Notes on Electrostatic Precipitator .... e+e. he «oe 77 E, Feasibility of Estimating Body Strontium Burden by F. Analysis of Milk and Urine... 1. ..sseseesvebh Rate of Depletion of Strontium in Soil... ee eee =i 70 ee 08 eo oe JL