Keystone Mine

Past ProducerCopper, ZincUSGS MRDS

Location

StateArizona
CountyCochise
Coordinates32.09290, -110.05844

Commodities

PrimaryCopper, Zinc
SecondaryMolybdenum, Lead, Tungsten, Silver, Gold

Mine Details

StatusPast Producer
First Production1915
Last Production1958
Discovery Year1908
Data SourceUSGS MRDS
Source ID10039383

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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