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![Calumet Hecla Copper Mining Co line5526.jpg Calumet Hecla Copper Mining Co](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_line5526.jpg?itok=WqwuLMoV)
Description
Calumet Hecla Copper Mining Co. Keweenaw Peninsula, Lake Superior (Image credit: NOAA/OAR/Great Lakes Environmental Research Laboratory; National Park Service)
Credit
NOAA/OAR/Great Lakes Environmental Research Laboratory; National Park Service
Collection
America's Coastlines