LLY Cg gy hn oo Ser o> relsaaabhbo sna Ve Con rants jp acy ben Lnoriaed person pruiwiled, . R HEADQUStaes TASK GROUP 71 CR Ere RC PRIORITY * FROM: HEALTH DIV LOS ALAMOS SCIENTIFIC LAB LOS ALAMOS NIMEX TOs CTG SEVEN PNT ONE ENIWETOK NI/ADSIGN SERIES CHARLIE/ /ASSIGN SERIES DOG/ CITE: DTG Z22i32Z APR SECRET RESTRICTEL DATA For THOMAS L SHIPMAN HEADQUARTERS COPIES FOR AL GRAVES AND E P COnKITE FROM WRIGHT LANGHAM PD VERY PRELIMINARY RESULTS OF URINE ASSAYS INDICLTE THE FOLLOWING ORDERS OF MAGNITUDE OF INTERRAL CONTAMINATION OF RCNGELAAP NATIVES PD IODINE CONSTITUTES A MAJOR ACTIVITY IN THE URINE AND ASSUMING NORMAL EXCRETION SIGNIFIES ABLE TOTAL BODY BURDEN AT TIME OF FALLOUT OF ABOUT OLF FOINT Zr.o MILLICULI7Y P32 PLUTONIUM CONTAMINATION IS PRESENT AND URINE ASSAY SIGNIFIES AELE TOTAL BODY LOAD OF ABCUT POINT SMeLAE CLF ZERO FOUR MICROGRAMS OR ABOUT ONE SLANT ONE ZERO OF TOLERANCE PD BASED ON ONE ZERO ZERO PERCENT ABSORPTION OF IOBINE AND ONE PERCENT ABSORPTION FOLDER BOX No COLLECTION REPOSITOR [/33// Ct STLE [VETVES OF PLUTONIUM AND THEIR KNOWN EXCRETION RATES THE TOTAL BODY BURDEN OF TOTAL FISSION PRODUCTS AT TIME OF FELLOUT IS ESTIMATED AT ABOUT FIVE MILLICURIES ASSUMING THEY ARE UNIFORMLY ABSBRBED TO THE EXTENT OF ONE PERCEKT PD FROM THE PRESENT PRELIMINARY RESULTS WE BELIEVE THE INTERNAL RADIATION DOSE TO BE SMALL AND PROBABLY UNIMPORTANT COMPARED TO THE EXTERNAL DOSE ALREADY RECEIVED PD PARA TOTAL URINE GAMMA ACTIVITY MEASUREMENTS INDICATE THAT RATIO OF INTERNAL EXPOSURE OF RONGELAAP NATIVES TO AIR WEATKER PERSONNEL IS ABOUT ONE ZERO TO ONE PD PARA PLEASE RECUEST SHARP AND CHAPMAN ON KWAJALEIN TO COLLECT ADDITIONAL URINE SAMPLES FROM RONGELAAP NATIVES PD CONTAINERS FOR POOLING SAMPLES ARE IN TRANSIT PD JIM PERRINGS IS HOW ON ENIWETCK AND WILL CONTACT THEM REGARDING THESE SAMPLES PD REQUEST BIOPSIES OF LESIONS BSE SENT TO LUSHBAUGH AT LASL PD REF THIS MSG HOW HYPHEN ONE ONE ONE PD END OF we . MESSAGE ia ape B2/22252 me Hane pee +e - xetear DECLASSIFYING= ae UW —= AFP ron We UNO LESSEE Krobt G® Sa GROUPCited mes ae TEL BL 5 DATETIME [GREER ESTE as - eetTae