ghana shipping,containers ) agd corrected to H + 1 hour, ranged from 1.4 X 10° to 46.8 X 10° disintegrations/min. The decay slopes for samples from an evacuation filter and from a plastic sampler bag were determined to be -2.08 and -2.35, respectively. A preliminary report of this work appeared as CRLR-105. rs he ated ngs - CRIR - 211 - SPECIAL TROOPS AGAINST IONIZING RADIATIONS. Alfred W. Klement, Jr., 22 June 1953. CONFIDENTIAL -he eed On the basis of an extensive literature search, deduction was oe id ° FINAL REPORT ON THE FEASIBILITY OF BODY ARMOR FOR USE BY made in CRLR 71 that body armor against radiation was feasible for use by special troops. This report describes tests in which the degree of radiation attenuation by such armor was determined and corroborates the deduction made in the earlier report. average ground While exposure in the field would normally be to area-source out radioactivity, both area- and point-sources were employed in studies of attenuation by standard types of combat armor and the proposed lead type. Actual attenuation of area-type radipactivity by lead body armor was found to be close to that calculated from theoretical data. Reduction factors were slightly higher than those obtained in point-source experiments. These tests, which confirmed the feasibility of using lead armor for partial body-protection against gamma radiation, also revealed that present combat-type armors provide little or no protection against ionizing radiations. and A conclusion is also drawn in this report that reduction of beta-particle intensity by ordinary clothing is slight. Several layers of clothing are required to reduce intensities by significant amounts. ee A preliminary report of this work appeared as CRIR-71. t er CRLR ~ 215 aed - FALLOUT STUDIES ON ENIWETOK ATOLL (WI-617). (Operation IVY) ided E. H. Bouton, Phyllis B. Gordon, R. C. Tompkins, 913 SECRET-RESTRICTED DATA . lt ers W. R. VanAntwerp, and E. F. Wilsey, 26 June 1953. we - Fallout arising from the surface detonation of a thermonuclear device (Mixe Shot) and from the air burst of an atomic bomb (King Shot) was collected by several different methods, and studied to determine the RESTR Si A ea 31 JPNRC