The D + 1 flights located the EOB and delineated the contaminated are-. (Figure 3.7). A cei
tarrinated patch was suspected to be northeast of Bikini, based on the control cecter plots.
During the data reduction, a navigational reporting error was discovered which changedthe
relatively isolated patch from the northeast to a position almost due east of Bikini.
TABLF 3.2
Altitude
ALTITUDE RADIATION DATA
OVER WATER
mr/hr*
mr/hrt
mr/hrt
ft
1,000
0.41
800
0.52
700
600
0.12
0.135
0.225
0.225
500
0.135
0.29
400
300
0.175
0.175
0.38
0.42
200
0.225
0.62
1.1
2.1
1.4, 1.78
50
2.6, 3.08
* Tewa + 3, 12-01. N, 164-41 E, Top Hat detector
in P2V-5.
t Tewa + 3, 12-11 N, 165-02 E, Top Hat detector
in P2V-5.
t Seminole D-day, off Janet, scintameter, TH-3,
in helicopter.
§ Values from repeat runs.
The D + 2 flights (Figure 3.8) investigated the northeast sector without discovering contamination. The eastern contamination was not suspected until the data-reduction period, so no
further examination was scheduled in that sector.
The D + 3 flights (Figure 3.9) reconfirmed the hot area. No further flights were scheduled,
TABLE 3.3 SUMMARY OF FALLOUT DISTRIBUTION, ZUNI
Isodose
Area
mr/hr
mi?
Difference Area
mi?
Average
Contamination
mr/hr
mec
D+1
165
165
1.25
0.25
0.125
1.25
4,677
8,433
4,512
3,756
0.59
0.18
0.025
13,683
5,250
0.06
757
6,775
757
6,018
1.25
0.50
D+3
0.75
0.25
\
as low intensities were encountered on this day.
The fallout distribution is summarized in Table 3.3.
3.3.3 Shot Flathead. The D-day flight discovered relatively high dose rate just west of
Bikini (Figure 3.10). The position immediately adjacent to the reef indicated that this could be
lagoon water passing over the reef, rather than fallout. This area was not completely mixed,
31