12 1 and Dr. Dunning, 2 summarize. and I think I will leave that for him to There are minor differences in the approaches and also the numerical values of the parameters, but these do not 5 seem to lead to any sharply different values. 6 is all I have to say. 7 DR. As the group can appreciate, there gs] is a great deal of uncertainty in trying to estimate the 9 numbers. Different instruments were used by different people 10 at different times, Z 11 were calibrated recently before use, some were not. 5S 12 addition to the actual survwys taken, of course, a8 13 computations were made, such as the ratio of formation of es 14 Neptunium and fission products for this particular device, 3 15 being of the order of .8, for exampl, 16 estimate what the relative dose rates would be at different 17 times after detonatio and trying to come up with an 18 integrated dose for the times of interest. g. 19 are D DUNNING: I think that | Are, . Misiettia ae lL Some instruments In theoretical and then trying to In the case of Rongelap natives, the fifth or sixth 20 hour after the fallout to the time of evacuation, there was 21} still some uncertainty as to the exact time of initial #22 fallout, even uncertainty as to Neptuniun contribution, 23 uncertainty as to where the people were. 241 dose rat e readings at different parts of the island. 26 were the natives? epartrceny of Do serg Historian’: a and different places. v We had different How long did they stay there? Where Different ‘