U.S. Army secretly sprayed St Louis, other cities with radioactive particles during Cold War?

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The claims involve other cities, as well. More background at link below.

There is a lot of evidence that shows people in St. Louis and the city, in particular minority communities, were subjected to military testing that was connected to a larger radiological weapons testing project.’

Previous investigations of the compound were rebuffed by the military, which insisted it was safe.  However, Professor Martino-Taylor believes the documents she’s uncovered, prove the zinc cadmium silfide was also mixed with radioactive particles.

She has linked the St Louis testing to a now-defunct company called US Radium. The controversial company came under fire, and numerous lawsuits, after several of its workers were exposed to dangerous levels of radioactive materials in it’s fluorescent paint. More via Mail Online.