pen CRLR - 243 wan - A REVIEW OF THE EFFECTS OF THERMAL RADIATION FROM ATOMIC WEAPONS. Carl Crisco, Jr., and luther M. Hardin, 11 August 1953. SECRET-RESTRICTED DATA (Prepared for Joint Issue by the Cm1C and QM). Different agencies within the Department of Defense have in- vestigated the effects of thermal radiation from atomic weapons and have published the results of their studies in reports of diverse origin. This report presents a summary of the findings of the various investigating agencies ani correlates them in useful form. The report includes a discussion of: (1) the characteristics of thermal radiation from an atomic bomb detonation, (2) the apparatus and techniques used in thermal radiation studies, (3) the effects of thermal radiation on military equipment and structures, (4) the effects on clothing materials, and (5) the protection afforded by various clothing materials. CRLR - 268 BEST AVAILABLE COPY - RADIOLOGICAL COUNTERMEASURES. Manfred Morgenthau and Morris L. Sehoss, 28 August 1953. SECRET-RESTRICTED DATA Cn the basis of protection and decontamination studies conducted in barren areas under simulated attack conditions, and on small-scale laboratory tests, an assay is made in this report of the probable efficacy of countermeasures which might be taken in an urban area under RW attack. The population of bekaviour, sy exposure will conclusion was reached that an intelligently instructed an industrial-urban housing complex can so adjust its following simple directions, that the average radiation be substantially lower than under routine behaviour conditions. But indivicual measures alone will not prevent harmful exposure. The radiation intensity of a contaminated target-complex can be reduced by applying basic shielding and decontamination procedures to an-extent that individual dosage would be reduced by 35% to 90%. In this connection it is felt that removal or burial of the contaminant would be less laborious and more e=fective than the erection of shielding barriers. Finally, the time of recovery from RW attack will depend on the facilities available, the manpower reserve, the extent and quality of official planning prior to the attack, and on the indoctrination and training of the populace. One imponderable factor exists: following zhe attack. the effect of prevailing weather during and __.