Order number 940406-171827-13 page 49 OFFIGAL USE ONLY set 5 with 102 of 102° ms neutral-density filters of varied transmission factors were experimentally employed. No recommendation for an overall optimum filtering can be made, because samples included only low-yield detonations ad cannot be correlated to higher yields, varying ranges, and 801. KEYWORD (S) " Item 150. 110. changing ambient light conditions. ‘ HARDTACK/optical detection ;OPTICAL DETECTION/; OPTICAL RANGE FINDERS/;HARDTACK 86 REPORT NUMBER PRIMARY TITLE (M) XRD--173 Hemorrhagic syndrome of acute ionizing radiation iliness produced in goats and swine by exposure to the atomic bomb at Bikini, 1946. Appendix No. 15. Director of ship material report. Operation Crossroads 70. PERSONAL AUTHOR (M) Cronkite, E.P. 371. PUB. DATE (YYMMDD) 481007 34. CLASSIF. LEVEL TEXT Unclassified 950. ABSTRACT Goats and Swine were exposed at varying distances to the bursts at Operation Crossroads in order to study the hemorrhagic effects of bomb radiations. It was considered that all pathologic phenomena observed were the result of {gamma} radiation, either at the time of the explosion or from {gamma} emission of residual 801. KEYWORD(S) radiation. In general, the hemorrhagic syndrome could be divided into three stages: that of increased capillary fragility; increased capillary fragility plus a progressive thrombopenia; increased capillary fragility, thrombopenia, and a blood coagulation defect. The blood coagulation defect was observed only in fatally irradiated animals in which terminal bacterial invasion was also prominent. A circulating anticoagulant was shown to be present 10d to 12d after exposure, and it could be neutralized in vitro by toluidine blue and to a lesser extent by thrombin and thromboplastin. Evidence was presented suggesting that fibrinolysins may have been activated or increased in concentration. CROSSROADS/effects experiments ;GOATS/biological radiation effects ;SWINE/biological radiation effects ; HEMORRHAGE/radioinduction ; IONIZING RADIATIONS/biological effects ; CROSSROADS; GOATS; SWINE; HEMORRHAGE ; RADIOINDUCTION item 150. 110. ~~ 87 REPORT NUMBER PRIMARY TITLE (M) 9003%23 XRD--172 Effect of the Bikini atomic bomb Test Able on soil microorganisms. Appendix No. 14. Director of ship material report. Operation Crossroads OFFICIAL USE ONLY