Keystone Blue Quarry
MSHA Mine ID: 0900042
Material Type
Dimension Stone NEC
Mine Type
Surface
Classification Confidence
95% (HIGH)
Location Status
VERIFIED
Operator Information
Operator
Polycor Georgia Granite Quarries Inc.
Controller
Polycor Inc
Employees
17
Location
County: Oglethorpe
State: GA
Country: US
Data Source
US_MSHA
Snapshot: 2026-01-30
Classification: vv1
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