UNCLASS | IFIED L. Semple M1280-ABC -27- T— SeeRE _—— (apa/gal) Rain samples obtained from the University of Chicago tritium group - 1. 3.4 gal.: collected in Chicagc, Nov. 17, 1952; 7.5 + 0.2 3.8 gal., collected in Chicago, Now. 22, 2k, 4.5 + 0.2 - 30: 3.9 gmr.;: collected in Chicago, Feb. 11, 1953; 3.4 + 0.15 No. 40: 1.7 gei., collected in Chicago, Mmr. 12, 1953; No. 16: 0.11 2. 3. bh. in. Mo. 16: 25, and 26, 1952, 1.2% in. 0.03 in. 0.30 in. 0+ 2.6 + 0.3 5. Mo. 48: 1.8 gal.; collected in Chicago, Mar. 20 to 22, 1953; 0.05 in 6. Ho. 50: 1.5 gmi.; collected in Chicago, Mar. 31, 1953; 7-24 T. Ho. 51: 0.04 in 2.0 gai; collected ip Chicage, Apr. 2, 1953; 5-5 8. No. 56: 0.06 in 5 gel. 9. Ho. 59: 1.5 gmi.; collected in Chicage, Apr. 24, 1953; 0.03 in. 0.03 collected in Chicago, Apr. 1, 1953; 0.3 Q.5 + 1.0 8.42 + 0.60 4.O + 0.4 in. 10. Ho. 60: 1.5 gal.; collected in Chisago, Apr. 30, 1953; 1500-1520; 0.03 in 11. Mo. 61: 0.7 gal.; collected in Chicago, Apr. 30, 1953; 1830-1910; ).01 tn. 12, Wo. 67: 25 gal ; collected in Chicagc, May 2%, 1953; 0.02 in. collected in “hicage. June 5, 1953; 67.3 + 3.2 26.5 + 0.9 4.70 + 0.48 12.75 + 0.222 Mo. 7h: 5 gal. lh. Ho. 76: 2.1. gal.; collected in Chicago, June 25, 1953; 15. Mo. 77: 2.2 gal.; collected in Chicago, July 1 and 2, 7.4 16. No. 79: 2.4% gal; collected in Chicago, July 5, 1953; 5.0 + 0.4 17. Wo. G: 1.3 gmi ; collected in Chicago, July 17 to 20, 10.4 + 0.8 13. 0.0 in. trace 1953; 0.08 tn @.20 in. 1953; 0.12 to. [Cu Ss53 106 + 2.5 + 0.25 ry FIE! URCLASSU LANL