# Denniston Quarry
> **Metal/Non-metal** mine · MSHA ID `2002934` · Surface · **Active**
## Operator
- **Controller (parent):** CRH PLC
- **Operator:** Michigan Materials and Aggregates Company
- **Employees:** 27
- **Commodity:** Stone
## Location
- **State:** MI · Monroe Co.
- **Coordinates:** 41.895, -83.433056
## Safety record
- **Total accidents/injuries:** 9
- **Fatalities:** 0
- **Total days lost:** 17
---
*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*