Cliff

Past ProducerSilver, CopperUndergroundUSGS MRDS

Location

StateMichigan
CountyKeweenaw
Coordinates47.37390, -88.31424

Commodities

TertiarySilver, Copper

Mine Details

StatusPast Producer
TypeUnderground
First Production1847
Discovery Year1844
Data SourceUSGS MRDS
Source ID10170511

What This Means

This mine is a past producer — it was once operational but is no longer actively mining. Past producer sites may still have environmental impacts including disturbed land, tailings piles, and potential water quality effects. Some past producer sites have been reclaimed, while others remain as-is. Check with your state mining or environmental agency for current site conditions.

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