# Knoxville Mine
> **Metal/Non-metal** mine · MSHA ID `1302217` · Underground · **Temporarily Idled**
## Operator
- **Controller (parent):** Summit Materials LLC
- **Operator:** NR Hamm Quarry LLC
- **Employees:** 0
- **Commodity:** Stone
## Location
- **State:** IA · Marion Co.
- **Coordinates:** 41.27, -93.108056
## Safety record
- **Total accidents/injuries:** 10
- **Fatalities:** 0
- **Total days lost:** 119
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*