gncipssirled SESCREF HM-1L75-AEC L2=30-53 15 - Sample dpn/zal. Rain samples obtained from the University of Chicago tritium group. 1. No. 16: 3.4 gal.; collected in Chicago, Nov. 17, 1952, O.11 in. Te! + 0.2 2. No. 18: by + 0.2 3. No. 30: 3.9 gal.; collected in Chicago, Feb. lI, 1953; C.03 in. 3.9 + 0.15 4, No. 40: 0 + 0.3 5- No. 50: 1.5 gal.3; collected in Chicago, Mar. 31, 1953; C.03 in. Te4 + 0.5 6. No. 51: 2.C gal.; collected in Chicago, Apr. 3, 1953; 5. i + 1.6 No. 5€: 5 gal.; collected in Chicago, Apr. 15, 1953; 8.42 + 0.60 No. 60: 1.6 gal.; collected in Chicago, Apr. 30, 1953; 67-$ + 3.2 No. 61: €.7 gal.; collected in Chicago, Avr. 20, 1953; 26 + 0.9 0.30 in. C.04 7. 8. 9. 3.8 gal.; collected in Chicago, Nov. 22, 24, 2) and 26, 1952; 1.24 in. 1.7 gal.; collected in Chicago, Mar. 12, 1953; in. C.06 in. 1500-1520; 0.03 in. 163C-1910; C.Cl in. 10. Ne. 67: 2-1/2 gal.; collected in Chicago, May 22, 1953; , C.62 in. ll. No. 74: 5 gal.; collected in Chicago, June 5, 1953; 12. No. 79: 2.4 gal.; collected in Chicago, July 5, 1953; 13. 1k. C.05 in. 4eJO 12.45 + 0.48 + 0.222 5.-G@ + 0.8 No. 9C: 2-1/2 gal.; collected in Chicago, Aug. 1 to 3, 2.47 + 0.35 No. 92: 3. + C46 C.20 in. 1953; 0.62 in. ‘6.05 5 gal.; collected in Chicago, Aug. 4, 1953; in, 1045320 SFeCRET UNCLASSIFIED LANL