IN THE HAYDAY OF COPPER MINING IN THE KEWEENAW, COPPER WAS MINED FROM ROCKS WITH THE USE OF STAMPING MILLS. THE STAMP MILLS WOULD CRUSH THE BRITTLE ROCK LEAVING THE COPPER BEHIND. THE STAMP SAND TAILINGS WERE JUST DUMPED IN THE LAKE. AS STAMPING TECHNOLOGIES IMPROVED, THESE TAILINGS COULD BE FURTHER STAMPED TO YIELD MORE COPPER. THUS THE NEED FOR THE DREDGE.IN 1913, THE CALUMET AND HECLA MINING CO. BUILT THE C&H DREDGE #1. THIS WAS LATER SOLD TO THE QUINCY MINING CO. IN 1951, AND BECAME KNOWN AS THE QUINCY DREDGE #2. QUINCY DREDGE #1 SANK IN A STORM. DREDGE #2 WAS USED UNTIL 1967.
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