# Thornton Quarry
> **Metal/Non-metal** mine · MSHA ID `1100066` · Surface · **Active**
## Operator
- **Controller (parent):** Heidelberg Materials AG
- **Operator:** Heidelberg Materials Midwest Agg, Inc.
- **Employees:** 49
- **Commodity:** Stone
## Location
- **State:** IL · Cook Co.
- **Coordinates:** 41.565833, -87.613611
## Safety record
- **Total accidents/injuries:** 85
- **Fatalities:** 0
- **Total days lost:** 1603
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*