National Quarries

MSHA Mine ID: 0400204

Material Type

Dimension Granite

Mine Type

Surface

Classification Confidence

95% (HIGH)

Location Status

VERIFIED

Location

33.179722, -117.157222

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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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