# Blackstone Pit & Mill
> **Metal/Non-metal** mine · MSHA ID `0401966` · Surface · **Abandoned**
## Operator
- **Controller (parent):** Martin Marietta Materials Inc
- **Operator:** Calaveras Materials Inc
- **Employees:** 0
- **Commodity:** SandAndGravel
## Location
- **State:** CA · Madera Co.
- **Coordinates:** 36.747498, -119.771627
## Safety record
- **Total accidents/injuries:** 5
- **Fatalities:** 0
- **Total days lost:** 9
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*