# Ralston Quarry 
> **Metal/Non-metal** mine · MSHA ID `0503007` · Surface · **Active**
## Operator
- **Controller (parent):** CRH PLC
- **Operator:** Oldcastle SW Group, Inc
- **Employees:** 17
- **Commodity:** Stone
## Location
- **State:** CO · Jefferson Co.
- **Coordinates:** 39.813889, -105.248056
## Safety record
- **Total accidents/injuries:** 29
- **Fatalities:** 0
- **Total days lost:** 142
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*