draft COMMENTS ON SOURCE INFORMATION Fallout Patterns | \% deed The source documents (indicated tn the References portion of this rerort indicate the/deseiratecontours for the fallout patterns heave beBn drawn to show the ganna (deserate in roentgens rer hour, three feet aboval in terms of the one hour after burst reference time. the ground, The yi-2 aprroximza tion was used when no actual decay data was available to aditust radiftion meesure- ments to the one hour reference time. It is important to recognize the H +1 hour is used as a reference time, and that only the ccntours frbm low yield were complete at one hour after burst. For high yield wearcns] fallout over some parts of the vast areas shown did not commence until ramfhours after burst. Where several fallout patterns were available fcr a rarefsts event, eac: has been presented. Hodo graphs The hodographs were drawn for a ccnstant ballson rise ratte of 5,000 ft/hr and are presented because other, more meanine?:1l, infe not available. presented Several hodogranhs are indseated for the H plus times indicated vy the number at the end of the arrow. This nurser is in HY It is recognized that fallout did not necessarily folldw presented herein. However, a simole comparison of the CAST3s plus hours. the hodograrns BRAVO hodozgrachs with the actual or modeled fallout patterns will snow the xBrit of ‘their consideration. DOE ARCHIVES +4