124 SHE SHORTER-TERM BIOLOGICAL HAZARDS OF A FALLOUT FIELD Topic IV External Beta Radiation WEEKS SURVIVAL Fraure 4.-~Death pattern of swine following trradiation. 100 days recovery and reexposed at 50 r a day until death. There are several interesting things here: The previous dose has an effect at least on early deaths; the previous dose affected the spacing of deaths, bunching those with the higher previous dose; spacing those with the least: previous dose; one animal was able to accumulate nearly 18,000 r 50 r/day before death. There is no question of the swine’s radiore- sistance, for both the Navy Group and UT- AECgroup have found that the swine responds to acute radiation exposures similar to all other comparable animals. In summary, can all of these variables be lumped and statistically treated as a single factor called “life shortening’’?