ST. LOUIS (AP) - A top Army official says that an investigation into secret chemical testing in impoverished areas of St. Louis during the Cold War era found no health risk for those who lived in the testing area.
In the 1950s and 1960s, the Army sprayed zinc cadmium sulfide into the St. Louis air as part of a biological weapons program. St. Louis was chosen because it bore some resemblance to Russian cities.
Senators Roy Blunt and Claire McCaskill wrote to the Army demanding answers in September after learning of research into the testing by a St. Louis professor, Lisa Martino-Taylor.
Assistant Army Secretary Katherine Hammack says in a letter received by Blunt's office Friday that Army investigators reviewed several studies and assessments and found no health risk.