oe eee: ee or boron-10,. peered, At 1:30 p.m, Dr. Froman and Mr. Murray left the meeting. and Dr. Dunham remained to discuss the EEG)<11out, . Castle Fail~—out mace Ye Dr. Claus ™ DOE ARCHIVES With the aid of a map Dr. Claus described the region in which heavy fall-out was known to have occurred, very high fall-out. There was a very narrow band of At Rongelap atoll, 110 miles ‘from the shot, the density of fall-out ranged from about 5 to 61 megacuries per square rile in a strip about twenty miles wide. contaminated. The drinking water was heavily By the third day its activity had decreased to the