Hidden danger: Radioactive dust is found in communities around nuclear weapons sites – Los Angeles Times
Studies by a Massachusetts scientist say that invisible radioactive particles of plutonium, thorium and uranium are showing up in household dust, automotive air cleaners and along hiking trails outside the factories and laboratories that for half a century contributed to the nation’s stockpile of nuclear weapons.
The findings provide troubling new evidence that the federal government is losing control of at least some of the radioactive byproducts of the country’s weapons program.
Marco Kaltofen, a nuclear forensics expert and a professor at Worcester Polytechnic Institute, said he collected samples from communities outside three lab sites across the country and found a wide variation of particle sizes. He said they could deliver lifelong doses that exceed allowable federal standards if inhaled.