( é t — JuL in’ we THE UNIVERSITY OF CHICAGO CHICAGO 37° ILLINOIS 410268 THE ENRICO FERMI INSTITUTE FOR NUCLEAR STUDIES July 13, 1956 or, i, F, Libby U. 5S, Atomic Erergy Commission Yashinston 25, D. C. Dear Bills I have enclosed a summary of results that the Nuclear Science and Engineering Corporation obtained for 26 Rongelap Atoll resurvey samples. not in a vosition to comment on the results since I do not have complete sample informatione The NRDL sample description information is also enclosed. have confidence in the NSEC activity data, but I have advised NRDL to recheck the reasonableness of the calcium concentrations based on their experience for sinilar samples. The data for the four Brawley, California plant samples which were col- 4, Alfalfa 6 e638 Tettuce Brocolli Peas NOOO0 NOON 1059-~P 1050-P 1061-P 1062-=P O0Oo00 Zo Plant Type e rm ~ CL No. L+0+0+f+ jected on January 5, 1956 are listed below. Tne results show the low concentrations we would expect in view of the low The large variations in Sunshine Units for these plant samples are not surprising considering variations in root depth and period of growth and the possible wide scatter of sr90 distribution in dry areas, soil level, ly secretary and I are in the process of compiling Chicago Bulletin No. 2, wiich will be the final report we make before closing out the lab, Sincerely yours, E. A, Martell “AN? US DOE ARCHIVES nah , Enclosures RG 396 US ATOMIC ENEKGY Collection pe Denartasnt of Eng Historian's Office ARCHIVES COMMISSION __.