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 . The workers underwent initial decontamination at the facility where the incident happened and were then transported to an on-site medial center for evaluation , the lab said in a statement . There is no risk to the workers or environment , the lab says .
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 .