Secret UNCL SSIFIED RM-1175-A8C 12-30-53 - 20 - Sample No. 103: 0.13 in. 5.0 gal.; collected in Chicago, Oct. 26, 1953; 1+ ~) ~) ON 5 gal.; collected in Philippine Islands, March, 1953 0.59 + 39 © 18. 13 54 1.16 + No. $7: 5 gal.; collected in Chicago, Sept. 18, 1953; 0.63 in. No. 98: 5 gal.; collected in Chicago, Sept. 11, 1953; 1.79 t+ 16. C.50 in. 1.5 i+ No. 96: 0.4 t+ 15. 17. O.18 2. 3. 4. May 20, 1953 Mississippi River water at St. Louis, collected April 17, 1953 ~ Pacific Ocean (Santa Monica Beach); 80 liters, collected W7 5.C gal.; 439 Chicago tap water, 9.83 gal.3; collected Oct. 27, 1953 Snow sample No. 19: '.5 gal.; collected in Chicago Dec. 2, 1952; 3.90 in. + C.08 w 1. tA Other water samples AA K. dpm/gal. These data are complete to date. W. F. Libby University of Chicag nokia SECRET ——! URCLA SIFIED