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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from U. S. Project Trinity Report by Carl Maag and Steve Rohrer: this three-day period indicate that the two individuals who operated
mechanical shovels received 3.4 and 4.3 roentgens, while the two who
supervised and monitored the excavation received exposures of 4.2 and
4.7 roentgens. The individual receiving 4.7 roentgens during the
excavation operation had received 1.3 roentgens from a previous
exposure, making his total exposure 6 roentgens (1).
An Army captain who accompanied all test and observer parties into the
ground zero area between 1 September and 11 October 1945 received a
total gamma exposure of 2.6 roentgens (1). The activities and times
of exposure are not known for other personnel with exposures over 2
roentgens.
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