calculation indicated that about 50 percent of the activity was accounted for in the fallout
pattern.
3.3.3 Shot 2.
Bikini Atoll was not heavily contaminated after Shot 2, since the winds
carried most of the activity toward the northwest. Some data were available from the
free-floating buoys, but they were not sufficient to produce reliable contours. The maximum reading observed at 35 miles from ground zero corresponded to a land reading of
Station 22012 Dog
Total Exposure to
Exposure Rate , r/he
25 Hours = 3735¢r
Station 220.08 Obdoce
Total Exposure to
20 Hours « 133¢r
0.
Oo
0
20
«630
Time , Hours
Figure 3.6 Residual gamma rate versus time, Shot 1.
on Dog, 41,372 feet to ground zero.
feet to ground zero.
Upper curve: Station 220.12
Lower curve: Station 220.08 on Oboe, 83,762
435 r/hr extrapolated to H + 1 hour. Rad-Safe readings on Sites Able and Charlie near
ground zero indicated readings of 4,700 r/hr and 1,100 r/hr, extrapolated to H + 1 hour.
The other islands received exposure rates of less than 25 r/hr at H + 1 hour.
3.3.4 Shot 3. The falloutpattern from Shot 3 was ideally located with respect to the
measurement stations.
The shot was located on Site Tare, on the south edge of the atoll,
47