# Rialto
> **Metal/Non-metal** mine · MSHA ID `0405392` · Surface · **Active**
## Operator
- **Controller (parent):** RRM Development Corporation; Mitsubishi Corp
- **Operator:** Robertson's 
- **Employees:** 28
- **Commodity:** SandAndGravel
## Location
- **State:** CA · San Bernardino Co.
- **Coordinates:** 34.150556, -117.418333
## Safety record
- **Total accidents/injuries:** 14
- **Fatalities:** 0
- **Total days lost:** 665
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*