| RERTEF OTE RET reeT Table 10.8-—HELEN (BOGAIRIKK)*t 1952 3 § 1 8 9 Nov. Nov. Nov. Nov. Nov. 0805 0807 9742 O48 0742 11 Nov. 12 Nov. 15 Nov. 0800 1616 0801 17 Nov. 1623 0803 18 Nov. O757 Meee ee 16Nov. PORE Time 19 Nov. 21 Nov. 1953 3 Jan. Ground reading, mr/hr mr/br 13,000 8,000 2,200 1,800 1,700 2,400 1230 0844 0939 Air reading, _ 800 1,600 1,000 Island Island Island Island Island center center center center center Island center Island center Doubtful value King day 700 600 Island center Island center 600 Island center 340 1,200 Remarks eX Date 280 */ nautical mile from ground zero. fAssuming that radiation decay follows a T~'-? law, extrapolation in- dicates that radiation readings greater than 1700 r/hr would have existed at H+ 1 hr. Limited recovery (10 min) could commence at H + 36 hr. 45