# Guernsey Quarry
> **Metal/Non-metal** mine · MSHA ID `4800004` · Surface · **Active**
## Operator
- **Controller (parent):** Martin Marietta Materials Inc
- **Operator:** Martin Marietta Materials Inc
- **Employees:** 10
- **Commodity:** Stone
## Location
- **State:** WY · Platte Co.
- **Coordinates:** 42.272778, -104.726111
## Safety record
- **Total accidents/injuries:** 10
- **Fatalities:** 0
- **Total days lost:** 41
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*