This report summarizes the results to date of various invusti gations undertaken by the Health and Safety Laboratory on Project GINS HWE. The basic purpose of this report is to present new data on theldistribu- tion of Strontium-90 and this, to the best of our ability, we ave dons, However, data are only useful when they serve ag the basis forfinterpreta~ tions and conclusions. We are compelled to point out that theldata are as yet relatively few and the conclusions muut therefore be regarded as tentative, more so in some areas of the report than in others, SOOPE OF WORK AND PRINCIPAL FINDINGS The specific questions which the Laboratory attempted to ansver mathods of study and the principal findings can be sunmarized the followss 1. DO DATA FROM THE GIMMED PAPER NETVORK ENABLE A SATISFACTOUY ESTIMATS OF Sr89~90 FALLOUT TO THE EARTH'S SURFACE? Methed of Study Principal Findinrs PTET Ey TE TUT FETERET TTT Brg ELH Rey Oy EEE 0 ee ee eee ee eT eT ~ Helis [i WA THe {BEE TAB ihe eT H Samples of soil from five locations in the United States wers analyzed for radioactive Strontium. The results wero compared with the amounts of radioactive otrontium predicted by our fallout measurements, Ceeeee eee reeree te TE TT Pr Te TTT TPEAE PT See Pees 7 BEL TEL EEE 2 EL GTAa ey TEED S gs ETT 6TE T HES EBuy tee lit CATH Tea Dg Ta aa (iP Tid iia! a sree eb TCE ordeatea ETM Ss wep ep eat PEE Tea tra TTP lity Sr ter Rar ert RIE EM Grea (meantkaaat STMeateMatLab PE TEPER TS TET cet et er i Pe TET ! baad yy H i ya t itty Rete PUG G Lot pearl mre iAlttlin WY aZh Pe ettECU ed Mob tete btts & TP da: AT HE i {E eee Ee es b Ke ft ATH THEE Ls ih TUGsay fathledae foo da. TT isteal Meetdab lates pig gi 6 ai PEt HAT Ee pot TOPE TT er Tt La 5 ' Ceti Meee, " Mt HLL at (GATE Th ote x “4 TAG HUTS HERE TE Te fe AP yes be af 6 Hbeeree at Trp cereyesin s Ht AU a stil Ai iol vote: u ye beer | ani ad ee Laster cs He pepere Py > tds: o o A ye’ Dy - 7 wpe a | . a P| i Pr tiode Wn ph O il : | | WEEE eeePet O./ 0.2. o.5 Oat PREDICTED TOTAL Sr CU /Gtt 507d)