What dose of radiation if fatal?
The lethal dose of radiation varies from person to person and depends on whether or not they receive medical treatment. However, the LD 50 dose (dose at which 50 percent of the population exposed will die) is about 500 rems. This dose is assumed to be whole body and to be absorbed in a short time. A dose of 1000 rem is sufficient to kill 100% of those exposed.
