"In 1983, Butte, Montana was declared a Federal Superfund Site. The Superfund designation paved the way for remediation and restoration of the environment throughout western Montana damaged by a century of mining and smelting in Butte and Anaconda, Montana."
Read more about it on the Butte-Sliver Bow County Website : https://co.silverbow.mt.us/417/Superfund-Division
Other Butte/Superfund podcasts from butteamericaradio.org are available here: http://www.butteamericaradio.org/superfund101