potential unique exposures from mine handling activities. Four higher cohort badges are not
shownin the plot for the final badging period for MENDER (1-10 May). One badge, for a cohort
of five seamen, is recorded at 5250 mrem; another, for a cohort of 4 enginemen, 3500 mrem.
Two badges at 1000 and 1560 mrem, worn by a Boatswain's Mate and a Metalsmith, are also

deleted as atypical.
The dosimetry data for MOLALAforsix badging periods is shown in figure 6.5. All
but the period 13-30 March show widespread badging of essentially the entire crew. Most of the
badges lack issue or collection dates, but these are inferred from film number issue sequences and
processing dates. Collection likely occurred one day before processing. The 13-30 March period
consisted of 14 cohorts; oneis listed as lost and another as wet. The distribution of the remaining
12 is shown in the plot. The date gap from 6 to 12 March is of no consequence as the ship's
activities for this period result in a reconstructed dose of only 17 mrem.
Of greatest uncertainty is the 31 March-11 April badge period. However, as the
dominant exposure within this period is shine from YAG-40 on 31 March, the precise closing date
is not critical. This exposure suggests why many film badge readings are much below the
calculated value; those personnel who remained below had little exposure potential.
The badging period of 12 April-2 May included three outliers with readings of 1580,
1620, and 3540 mrem. These were worn by a seaman, a Quartermaster, and a Boatswain's Mate
and are deleted as atypical. Similarly, for the period 4-7 May, two badges with readings of 1200
and 1235 mrem worn by a Boatswain's Mate and a seaman are not plotted. For 8-16 May,
Boatswain's Mates’ readings of 1610 and 1740 mrem are excluded After deletion of high-reading
outliers as representing unique exposure activities, the mean of film badge doses for the entire
period of MOLALA's participationis quite close to the total reconstructed dose.
Figure 6.6 shows the available dosimetry data for TAWAKONI.

All three of the

periods (28 February-7 March, 12 March-3,4 May, and 3,4-8 May) utilized cohort badging. The
reconstructed dose for the gap from 8 to 11 March is 91mrem. An individual badge worn by a

Metalsmith with a reading of 1100 mrem is deleted from the period 28 February-7 March. A
cohort badge worn by the Warrant Machinist with a reading of 1065 mrem is deleted from the 3,48 May period.

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