# Plant #20
> **Metal/Non-metal** mine · MSHA ID `1302134` · Surface · **Intermittent**
## Operator
- **Controller (parent):** Mathy Construction Company
- **Operator:** River City Stone Division Of Mathy Construction Co
- **Employees:** 2
- **Commodity:** Stone
## Location
- **State:** IA · Dubuque Co.
- **Coordinates:** 42.480556, -90.734444
## Safety record
- **Total accidents/injuries:** 3
- **Fatalities:** 0
- **Total days lost:** 6
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*