Big Reef Mine

Past ProducerAluminum, Barium-Barite, Calcium, Copper, Iron, Manganese, Phosphorus-Phosphates, SilicaSurfaceUSGS MRDS

Location

StateCalifornia
CountySan Bernardino
Coordinates34.80421, -116.34195

Commodities

TertiaryAluminum, Barium-Barite, Calcium, Copper, Iron, Manganese, Phosphorus-Phosphates, Silica

Mine Details

StatusPast Producer
TypeSurface
First Production1944
Discovery Year1938
Data SourceUSGS MRDS
Source ID10116066

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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