The Detroit and Lake Superior Smelter was a copper smelter located near Hancock, Michigan on the Keweenaw Waterway.
It was opened in 1860 by the Portage Lake Copper Company.
[1] The Calumet and Hecla Mining Company used the smelter until it built its own near Hubbell, Michigan and Black Rock, New York in 1887 and 1891 respectively.
[2] Some of the buildings still exist and are currently used by the Houghton County Road Commission.
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