Visualization: Most contaminated gasworks sites not cleaned up yet

Main story:

Toxic Legacy: Century-old tar plumes under Lake Superior stir health fears — and a cleanup could be years away

Credit: Kate Golden
Wisconsin Center for Investigative Journalism

Want to know more about “conditionally closed” and other terms here? Here’s a link to DNR’s glossary. And to learn more about any particular site, search for it in this state database of contaminated sites.

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