Twin Buttes Mine

AbandonedCopper Ore NECSurfaceMSHA

Location

StateArizona
CountyPima
Nearest TownGreen Valley
Coordinates31.87250, -111.08805

Commodities

PrimaryCopper Ore NEC

Mine Details

StatusAbandoned
TypeSurface
OperatorFreeport-McMoRan Sierrita Inc.
Data SourceMSHA
Source ID0203262

What This Means

This mine is listed as abandoned or sealed in federal records. Abandoned mines can pose safety and environmental risks, including unstable ground, toxic gas accumulation, flooded shafts, and potential groundwater contamination from heavy metals or acid mine drainage. Never enter an abandoned mine. If you live near this site, consider checking with your state environmental agency about any ongoing remediation or monitoring programs.

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