SOUTHWEST JEFFERSON COUNTY MINING
JEFFERSON COUNTY, MO
Superfund Site Profile
The Southwest Jefferson County Mining Site includes all of Jefferson County, Missouri, excluding the Herculaneum Site. Jefferson County is located on the northern portion of an area known as the Old Lead Belt where mining began in the early 1700s. Mine waste has contaminated soil, sediment, surface water and groundwater at the site with heavy metals, primarily lead. Mine waste has also been transported by the Big River ...
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