Lisa Martino-Taylor, a professor of sociology at St. Louis Community College, overlooks the area where the Pruit-Igoe public housing complex used to stand in north St. Louis on October 15, 2012. Martino-Taylor has uncovered information that the United States Military conducted top secret experiments spraying zinc cadmium silfide with a radioactive additive on the predominantly low-income people that lived in the area in 1953-1954 and 1963-1965. The people of St Louis were told that the Army was testing smoke screens to protect cities from a Russian attack. In her research, she found that the greatest concentration of spraying in St Louis was in Pruitt-Igoe which was home to 10,000 low income residents. She said that 70 per cent of those residents were children under the age of 12. UPI/Bill Greenblatt