Key Takeaway
Cupertino Quarry is a intermittent surface mine producing SandAndGravel, located in Cupertino, Santa Clara County, CA. It has 1 violations on record (0 S&S) and $0 in proposed penalties. Operated by Calmat Co.
Cupertino Quarry
Operator: Calmat Co
Controller: Vulcan Materials Company
Location: Cupertino, Santa Clara County, CA
Employees: 10
Recent Violations
View all 1 →| Date | Section | S&S | Negligence | Penalty |
|---|---|---|---|---|
| 06/18/2025 | 47.41(a)(1) | Non-S&S | ModNegligence | $0 |
Inspections
View all 3 →| Begin | End | Hours | Inspectors |
|---|---|---|---|
| 11/13/2025 | 11/13/2025 | 9.75 | 1 |
| 07/28/2025 | 07/29/2025 | 14.25 | 1 |
| 06/18/2025 | 06/18/2025 | 11.50 | 1 |
Mine Details
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Frequently Asked Questions
How many MSHA violations does Cupertino Quarry have?
Cupertino Quarry has 1 MSHA violations on record, of which 0 are classified as Significant & Substantial (S&S). Total proposed penalties amount to $0.
What type of mine is Cupertino Quarry?
Cupertino Quarry is a Surface mine producing SandAndGravel, located in Cupertino, Santa Clara County, CA. It currently has 10 employees.
Has anyone been injured or killed at Cupertino Quarry?
According to MSHA records, Cupertino Quarry has 0 reported accident/injury records and 0 fatalities on file.
Who operates Cupertino Quarry?
Cupertino Quarry is operated by Calmat Co and controlled by Vulcan Materials Company. MSHA Mine ID: 0405987.