TTT TT TT 9a TTT TTT a 4 5 - (OOK F 7 - 7 OK F 4 — _ CPM — 1K = i 0.1 L 1 ot tt bit ! \ ! jt Ltt bt } JL} 10 TIME IN DAYS AFTER DETONATION Fig. 5,3——Decay rate of air samples. Curve 1, /////on air sample collected 26 April 1954, Curve 2,4AMKEEair sample collected 5 May 1954, 49 100 ny loOOK ¢

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