2. To deternine the dimernsio.s of craters formed by surf..ce detonations of high yield devices. 3. To study the effects of the shock wave and attendant winds upon a natural tree stand. HOGRAM 4 - BICMEDICAL STUDIES 1.5 Initial plans for CASTLE included a study to determine the biological effects of neutron flux as a function of distance for high yield detqnations. This program was cancelled because the IVY test results indicated reduced significance of effects of neutrons relative to other effects for nuclear detonations of high yield. 1.6 PROGRAM:6 - SERVICE EQUIPMENT AND TECHNIQUES 7 ‘Director - Lt Col D. I. Prickett, USAF 1.6.1 Objectives 1. To obtain.weapons effects information by use of manned aircraft for use in determin ng and improving the delivery capability for high yield weapons. i 2. To operationally, evaluate shipboard atomic warfare counter- measures in regions of intense:~fadioactive fall-out, outside the limits of direct blast and thermal damage, in conjunction with water surface and ground surface detonationsof high yield devices. 3. To provide for theLimited study of effects and techniques bearing on the problems of detects communications, decontamination and protection. PROGRAM 7 - LONG RANGE parecer ry Director - Col P. R. wigna11, USAF : -‘nso 1.7 © ii To continue the development and evaluation of the various techniques under consideration by the U. S. Air Force for the long range detection of atomic detonations. 7 1.8 | | PROGRAM 8 — THERMAL RADIATION MCASUREMINTS Director - CAFT N. £. Kingsley, USI There exists a military requirement for the determjnation of the physical characteristics of thermal radiation from large-airburst detonations to provide information on energy partition and provide a basis for assessment of effects on personnel and materials.’ | Since all CASTLE detonations are planned as surface detonations it is considered that the military effects requirements for thermal radiation information is sears) covered under Frogram 18 Los Alamos Scientific Laboratory (LASL) which provides for power-time, spectrum, air transmission and total thermal energy measurements. ll