2, Lucite spheres renging from 5 to 30 cm. in diameter. A graduated series of spheres will be susvended at each ststion (? large end small animal station). They cont in film veckets and ion chanbers (high saturation) end ara d:signed to give the radiation doves in gir. 3. Mouse Phantoms: ocks Mouse sized conts ining film to be pleced «et each mouse station. A. Other measurements of neutron end g=17a ray intensity and srectrum will be made by 2. NU ck v DQ ry ’ N. studies by Bio-medicel group linited to the following 1. s WwW iN - > =xpoSsure Stetions: drone plenes, R. EL. end Los Alamos group. - biologics1 dosimetry mouse survival vs. distence thernal effects in lerge eninels ionizing and therns] redistion measurements Excent for the biological materisls in the ell biologic:1l stations are on the ground (or on floats) along one of several neerby radii. The stetions are of different ty es end are designed to withstand varying anounts of blest end to shield egsinst differ-nt tyres end smounts of ionizing readietion. All stetions excent those in the vlenes will have individual cells for the animals <s well &s & continuous reeord of the tanpergiure and sressure, EARSHI a3 autovtsetic airflow (which ST