Bonanza Mine

Past ProducerLead, Silver, GoldUSGS MRDS

Location

StateMontana
CountyPowell
Coordinates46.37934, -112.57089

Commodities

PrimaryLead, Silver, Gold
SecondaryCopper, Zinc
TertiaryAntimony, Arsenic

Mine Details

StatusPast Producer
Last Production1960
Discovery Year1895
Data SourceUSGS MRDS
Source ID10019598

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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