Copper Country, located in the Lake Superior district, supplied 90% of US copper and saw a refining innovation by John Collom.
4 reports, 4 independent
Updated Jun 16
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- Reports
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New informationRepeats or wire copies
AI-generated analysis. Brind wrote this summary from the reports listed below. It can be wrong. Each section says how much you can rely on it, and the sources are linked so you can check.
What happened
Copper Country, located in the Lake Superior district, supplied 90% of US copper and saw a refining innovation by John Collom.
Who's involved
What this event is mainly aboutHow it developed
Newest first. Tap a step to see who reported it.Copper Country used Lake Superior for mining; Collom developed jigs to improve copper refining.1 source
Copper Country dominates US copper supply and features a new refining technology.1 source
Mines in Copper Country are declining, prompting development of waste copper recovery methods.1 source
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The entities involved
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Copper Country
region in Michigan
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Lake Superior
largest of the Great Lakes of North America