= s&s Ry sempling time, the bomb cloud had separated inte three major portiens: the top portion rubbing up against the bottan of the overcast at 3,000 feet, a middle portion centered at 25,000 fest and the lower portion appearing to the eyes like red dirt shoveled over the top of the undercast st 15,000 feet, All po.tions of the bomb cloud maintained « strong reddish bram coler and altbough eeui-transparent in appearance, were always readily visible; particalarly with ths aid of bro sunglasses cr helust visors. SAPLIN Because of the apparent thinness of the cloud, Mger White I was directed in at 30,000 feet and plus 50 mimites for a brief miff and reported redistion intensity averaging 40 roentgens per hour, About this tims, the landing field was Closed ty beevy rain so White I was held off for 23 minutes before being put into the same portion for his sampling run. Clo intensities had dropped ty a factor of 4 to 5 in this comparatively brief time. Tiger White II was pat in at 25,000 feet and plus 96 minutes and found rediation intensities about the sam. Rive I and IT were directed into the visible bottem of the clond spread aleng the undercast at 15,000 feet and collected a required sample with no difficulty, even though the activity encountered was in spote and patches, Yellow I and It were directed into the middle portion of the cloud et 2 hours after burst and enceutt~ ered radistion intensities averaging fram 4 to 5 roenmtgens per hour, about es capected for thet tim. REST AVAILABLE COPY BA T The oumber ef fissions measured in the samples by Radio-Chemistry at Les Alamos averaged about 77% of the number predicted at PPC from observation of radistion levels ef sample papers as removed from the aircraft. The discrepancy was more than compensated for, by the pre-planned increase in pilots dosage based en experience from preceding REDWING shots. -B3- ce