-11- unexposed animals of this strein end those Siven various amoun ts o f 250 k.v. x-rays have been well esteblished. b. Neutron survivors: The survivors of the eight neutron grouns of neutron-exposed animels (50-450 ner group in hemisvhericel stations) will also be returned to Furth. They will be exposed to avcroximately the following mimber of rem of neutrons: 14, 40, 70, 14C, 560, and 1120. I don't know how they are going to control tnese grouns (I su; ose by unernosed animels). Inhaletion “xperiments: Grouns of (7?) 30 mice will be vleced in the fuselage of drone planes and the outsid air including f. p. will be admitted through louvres into their container. Jhen the animels are returmed to Jenrtan, wil’ be sacrificed seriel'y. gi. tracts, they The lungs, sxin and cearcass:es will be oooled, frozen and returned to Los Alemos for assay. orgens, The totel redioactivity of the and that due to molybdenum, will be determined. In this way it will be possible to differentinte between f.0. de-nosited on Srin and subsecuently swellowed from that inhaled. I don't know what kind of physical air semrling devices vill he used to control this exseriment other then those used to collect semolLes for yield chemistry. This is one of DO® ARCHIVES