Poor, minority neighborhoods in St. Louis were unwittingly part of Cold War chemical studies. Aerosol was sprayed from blowers installed on rooftops and mounted on vehicles. The Army claims that they were spraying a quote 'harmless' zinc cadmium sulfide," says Dr. Lisa Martino-Taylor, Professor of Sociology. Yet Martino-Taylor points out, cadmium was a known toxin at the time of the spraying in the mid 50's and mid 60's. Worse, she says the aerosol was laced with a fluorescent additive - a suspected radiological compound - produced by U.S. Radium, a company linked to the deaths of workers at a watch factory decades before. "The powder was milled to a very, very fine particulate level. This stuff travelled for up to 40 miles. So really all of the city of St. Louis was ultimately inundated by the stuff." Martino-Taylor says she's obtained documents from multiple federal agencies showing the government concocted an elaborate story to keep the testing secret. Part of the deception came from false news reports planted by government agencies. "They told local officials and media that they were going to test clouds under which to hide the city in the event of aerial attack. This was against all military guidelines of the day, against all ethical guidelines, against all international codes such as the Nuremberg Code," she says. The spraying occurred between 1953 and 54 and again from 1963 to 65.