# UNION BRIDGE MD
> **Metal/Non-metal** mine · MSHA ID `1800017` · Facility · **Active**
## Operator
- **Controller (parent):** Heidelberg Materials AG
- **Operator:** Heidelberg Materials US Cement LLC
- **Employees:** 175
- **Commodity:** Stone
## Location
- **State:** MD · Carroll Co.
- **Coordinates:** 39.555556, -77.165556
## Safety record
- **Total accidents/injuries:** 418
- **Fatalities:** 0
- **Total days lost:** 4336
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*