“…In fact, regulating the lead health threat from smelters was not a priority for EPA and some smelting states like Missouri at least until the 1990s, by which time the majority of primary smelters had closed and the industry's political power at the state and federal level had diminished. 100 Regulatory efforts, when they occurred, were often spurred by environmental organizations, community members, and public health advocates who pushed for environmental standards to be both set and enforced. Independent science, which advanced knowledge of health risks from smelters, lead, and the particular vulnerability of children, helped to inform the actions of environmental organizations, community members, and public health advocates.…”