Quarry source record
Frontier Sandstone Quarry
- Operator
- Operator under review
- Locality
- Near Harlowton, Montana
- Operating record
- Producer reports quarrying
- Coordinates
- Exact location under review
Independent source checks
- U.S. material origin
- VERIFIED
- Material identity
- VERIFIED
- Producer relationship
- VERIFIED
- Quarry relationship
- VERIFIED
- Quarry location
- REVIEW
- Operating record
- VERIFIED
- Photo source
- REVIEW
- Photo permission
- PENDING
- Technical data
- REVIEW
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.