# DQA Dumbarton Quarry
> **Metal/Non-metal** mine · MSHA ID `0402380` · Surface · **Abandoned**
## Operator
- **Controller (parent):** Rich  Gates
- **Operator:** DQA
- **Employees:** 0
- **Commodity:** Stone
## Location
- **State:** CA · Alameda Co.
- **Coordinates:** 37.536417, -122.074397
## Safety record
- **Total accidents/injuries:** 4
- **Fatalities:** 0
- **Total days lost:** 4
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*