"We tested all the kids that lived in that first quarter-mile, half-mile, three-fourths mile, mile," explains Denise Jordan-Izaguirre with the Agency for Toxic Substances and Disease Registry, part of the Centers for Disease Control and Prevention. In 2001, the agency worked with state and local health officials to try to test every kid under six for lead in their blood. The results, she says, weren't exactly surprising.
"I think we were all appalled – not surprised – appalled. That it was this bad."
They laid out the results like a bulls-eye, concentric circles of contamination radiating out from the Doe Run smelter. Within a quarter mile, 56 percent of kids had high levels of lead in their blood. At a half-mile, it was 52 percent. Jordan-Izaguirre says she’d never seen numbers like that, except in the developing world.