Tres De Mayo Mine Group

Past ProducerSilver, LeadUSGS MRDS

Location

StateArizona
CountySanta Cruz
Coordinates31.44597, -110.80207

Commodities

PrimarySilver, Lead
SecondaryCopper, Gold
TertiaryZinc, Manganese, Molybdenum, Vanadium

Mine Details

StatusPast Producer
First Production1909
Last Production1942
Discovery Year1880
Data SourceUSGS MRDS
Source ID10102403

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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