TABLE 12 CONCENTRATION OF FISSION PRODUCTS IN ATR AT VARIOUS ALT Time of Sampling Number of Mathod of DES Date and Place titude (feet) 8/27/53 40,0C0 11/30/53 39,500 2.0 2 12/8/53 (NoM.) 88,000 6.0 i Electrostatic 0.06 12/8/53 tae 35,000 200 2 Filters on 1.9, 12/15/53 Oo, 300 2.0 2 12/21/53 200 19 i 12/22/53 200 eh, 2 " DOL, 0.0L 12/23/53 (N.Y.) 200 2k, 2 % fa 0.12 200 $6 2 ft qg.08, 9.07 (Calif. ) (NoM. ) (N.M.) (N.Y.) (N.Y.) 12/eu - 28/53 (N.Y.) (hours) 075 Samples 2 Collection _Witers on Aircraft " Precipitator Aircraft " 3 d/min/M 1.2, 1.9 0.04, 0.03 1.7 0.09, 0.12 Hi-Vol. (MSA Comfo) [0.09