Keystone Quarry & Plant

Past ProducerStone, Crushed/BrokenUSGS MRDS

Location

StatePennsylvania
CountyHuntingdon
Coordinates40.43058, -77.92053

Commodities

PrimaryStone, Crushed/Broken

Mine Details

StatusPast Producer
Deposit TypeSedimentary
Data SourceUSGS MRDS
Source ID10075483

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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