National Quarries
MSHA Mine ID: 0400204
Material Type
Dimension Granite
Mine Type
Surface
Classification Confidence
95% (HIGH)
Location Status
VERIFIED
Operator Information
Operator
Superior Ready Mix Concrete L.P.
Controller
Vulcan Materials Company
Location
County: San Diego
State: CA
Country: US
Data Source
US_MSHA
Snapshot: 2026-01-30
Classification: vv1
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