Louis with motorized blowers perched atop low-income housing buildings, claiming at the time that the machines were part of a test for smoke screens that could guard against aerial observation by Russians, according to the Associated Press. The Army spread zinc cadmium sulfide in St. (The chemical's three constituent elements are zinc, cadmium and sulfur, but the Army's powder formulation also contained small quantities of either silver or copper to activate the chemical's fluorescence, as well as a silicate to aid in dispersion.) Zinc cadmium sulfide, created by heating a mixture of the compounds zinc sulfide and cadmium sulfide, was reportedly chosen by the Army for the physical similarities its powder form shares with a cloud of microbes and for its easy detection under ultraviolet light. Not in dispute, though, is the fact that the Army exposed people around the country to a poorly studied and potentially harmful chemical, without their consent. Louis tests likely involved radiological testing on humans, is highly contentious. The conclusion Martino-Taylor draws, that the St.
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