The accident occurred at the Idaho National Laboratory . They were exposed to low - level radiation from plutonium , the lab says . They were transported to an on - site medical center and are undergoing evaluation . There is no risk to the workers or environment , the lab says .
The exposure happened at the Idaho National Laboratory . Workers were exposed to low-level radiation from plutonium , the lab says . They were transported to an on-site medical center and are undergoing evaluation . There is no risk to the public or environment , the lab says .