TABLE 1 TOTAL EXTERNAL EXPOSURE RATES (ur/hr) * APRIL-MAY, 1967 BIKINI ATOLL: Ion Chamber Location Scintillation Counter GM Counter HASL LiF TLD's CaF 55 27 46 31 47,46 45,40 NRDL LiF TLD‘s CaF BIKINI Q Transect O' 50' 50' 150' (Loc. (Loc. (Loc. 300' 400' (Loc. (Loc. 1) 2) 3) 24 24 30 21 30 44 47 48 450' 43 45 600! 63 59 750' 81 92 900' 60 59 1050' 41 48 60 50 1200' 63 75 100 80 54 63 70 70 36 32 5) 6) 24.0 22.8 25.0 41.2 47.5 1350' 1410' (Loc. 8) 36.1 10 30 70 53,57 80 90 70 90 1500' 70 59 80 70 1650' 97 70 100 120 1800' 107 105 130 100 1950' 2100' 2250' 2400! (hoc. 7) 103.2 57 66 43 23 68 59 35 21 80 90 90 70 30 7 2700' 34 19 2850' 10 15 10 10 Village Road QO' (Loc. 4) 22 44 42 150' 23 25 30 30 300' 33 30 40 15 *1 ur/hr = 7.6 mrad/year. 45