The contaminated ground surface at Savannah River Site (SRS) is a result of the decades of work that has been performed maintaining the country’s nuclear stockpile and performing research and development on nuclear materials. The volatilization of radionuclides during wildfire results in airborne particles that are dispersed within the smoke plume and may result in doses to downwind firefighters and the public.
via Predicted cumulative dose to firefighters and the offsite public from natural and anthropogenic radionuclides in smoke from wildland fires at the Savannah River Site, South Carolina USA – ScienceDirect
Of course, since this is a pro nuclear slanted article, they completely ignore the danger of inhaled ‘hot’ particles. It only takes ONE hot particle inhaled into the lungs to initiate lung cancer. A tiny hot particle can also be absorbed and travel to other parts of the body.