” ‘ 239 couple of years x2go about this situation as far as it pertained between ordinary 25 and 49. The best guess that Rod Spence was able to give was that the original curves which were made from U 235 spuld hold well for plutoniua.. - Ce cae : = I think that information is available sonewhere to you ‘and probably on an unclassified basis, DR. DUDLEY: I am wondering if the discussim here of plutoniua implies that there & to be a fairly serious study of plutoniun from the point of view of Gabriel? Is this inplied? 11 DR. BUGHR: Yes, it brings it in. HR, HAH. EY: That was ansidered definitely as part of tt. 18 4 7 DR. BUGHER: Yes. So _— In contast tothe situation before, where we had such snall anounts that it did”not. 16 really significantly cone into the picture. . Now with very large anount of capture, 13, will have to go into, 19 DR. DUDLEY: (rig 17 Ve qn go eee d,: * 15 Si nT it certainly is sonthingwe 7s a t Washington, D. C. Alderson Reporting Company 10 - 7& _# The calctationsi< relative to thermo 20 nuckar weapons would not be different from the strontium 21 to plutonium ratios than the aiginal calculations for. straight fission reapons? HR, HARRIS: ARC I think maybe they would be because = — of the pesence in supers now of a fair anount of normal urapium which is much higher than the relative amount ( 4 f is ai