Six Hanford Site workers have shown up as possibly contaminated since Dec. 8. One worker was possibly contaminated twice.
The U.S. Department of Energy issued an emergency alert Tuesday morning at the Hanford site north of Richland, Washington, after a tunnel at a radioactive cleanup site caved in. Workers at a former chemical processing plant were evacuated and thousands more across Hanford were directed to take shelter indoors.
Nuclear waste is leaking out of a tank in one of the most contaminated nuclear waste sites in the U.S.