age . 510 \ . (BTACKFOOT ) Project 2.51 = Neutron Flux Measurements ant Shielding Studies Cc. W. Luke OR IVE To measure the neutron Slux ap we Mo ety af Atatinne from the potat of detonation of « SAMMItertce. 1100 to establigh Lie nonvardance of tne neutrcneenergy spestrua with increasing iistance from the point of jetonation. ™o measure the relative attenuation of neutrons »ni qamaa rays by various mixtures of concrete, borax, an? sulfur. RESUS As of this date no rercits are available. Lengthy coun’ ing procedures will prevent submiesion of definitive date until the Pre. liminary report is publishet. BEST AVAILABLE COPY