Porcupine Ridge

Past ProducerStoneUSGS MRDS

Location

StateMontana
CountyGallatin
Coordinates45.21102, -111.24139

Commodities

PrimaryStone

Mine Details

StatusPast Producer
Data SourceUSGS MRDS
Source ID10019142

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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