Quarry source record
Keystone Blue Quarry
- Operator
- Polycor Georgia Granite Quarries Inc.
- Locality
- Carlton, Oglethorpe County, Georgia
- Operating record
MSHA: Active · Mine ID 0900042
MSHA record details
Keystone Blue Quarry
Snapshot: 18 September 2026. Mine source record 0900042 · Look up this ID at MSHA · Status effective 4 July 1976Regulatory classification; confirm current supply separately.
Mine source record- MSHA ID
- 0900042
- Coordinates
- 34.013333, -82.976111
Independent source checks
- Material identity
- UNKNOWN
- Producer relationship
- VERIFIED
- Quarry relationship
- UNKNOWN
- Quarry location
- VERIFIED
- Operating record
- VERIFIED
- Photo source
- UNKNOWN
- Photo permission
- UNKNOWN
- Technical data
- UNKNOWN
Each check stands on its own. A photo or coordinate review does not change a confirmed material identity or producer relationship. Operating records do not guarantee current inventory.