Lab. of Radiation Biology Univ. of Washington Beta- Activity in Soils Collected at Rongelap Island February-March, i938* Feb. 1959 RRL AL TG a Plot No. 3 d/m/g dry Per cent d/m/g dry Per cent O-1 17607 72 96.5 1700T70 80.7 95124 4.5 32t 6 327 17 1.8 1.8 103%24 175732 4.9 8.3 d/m/g dry 5-6 ho Bg - 6-7 " _ tt _ tt 7-8 iy - tt _ " R-9 W _ 0-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 0-1 1-2 2-3 3-4 4-5 5-6 6-7 7-8 32717 8 11607104 b64t 15 32t 43 Be 92.4 5.1 2.5 iv " 19 2231 647 got 24+ Bg 26 14 15 1] sot 15 Bg r 18 87.6 7.5 2.3 16+ 7 od 39+ 17 1.2 24+ 8 167 7 1.6 1 407 13 Bg . tt 20 80, 1 1720+72 1.5 24+ 7 16t 7 10.4 3,0 3.7 1.1 Bg 24107 96 2071 25 64t 14 {t 1720t 72 Bg 91,2 3.6 1.6 Bg WT 1.7 6 1410760 56710 24T 8 " " 1.5 4y2. 0 5.7 135+ 27 4gt 18 BE - " Per cent 0-1/2 7290t280 454t 22 3-4 45 CCH 2 Depth in inches 1-2 2-3 y STATHOAVSOC l 199417 8010 4gt 8 32t 8 16t 7 80,7 9.3 3.8 2.3 1.5 8 1.1 8 *Determinations made with an Anton end-window tube. Corrections for counting efficiency and self absorption based on K49. Errors yiven are 0.95 counting error. i. 5

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