"The Environmental Protection Agency is re-examining more than 460 former lead factory sites across the USA for health hazards left by toxic fallout onto soil in nearby neighborhoods."

"The massive effort, a result of a USA TODAY investigation, involves locations in dozens of states and has already identified several sites needing further investigation and some so dangerous that cleanups are being scheduled, according to records and interviews with state regulators."

Alison Young reports for USA TODAY August 13, 2012. [2]