# Keystone Sales Yard
> **Metal/Non-metal** mine · MSHA ID `0801414` · Facility · **Intermittent**
## Operator
- **Controller (parent):** Vulcan Materials Company
- **Operator:** Florida Rock Industries, Inc.
- **Employees:** 4
- **Commodity:** Stone
## Location
- **State:** FL · Duval Co.
- **Coordinates:** 30.3675, -81.630278
## Safety record
- **Total accidents/injuries:** 1
- **Fatalities:** 0
- **Total days lost:** 10
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*Source: [MSHA Open Government Data](https://arlweb.msha.gov/OpenGovernmentData/) · AI Analytics · CC0 1.0*