# Relationship history for MSHA mine 2300454

Current hierarchy: **Woodridge Resource Corp → Pea Ridge Iron Ore Company Inc → PEA RIDGE IRON ORE CO**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Pea Ridge Iron Ore Company Inc → PEA RIDGE IRON ORE CO; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Fluor Corp → PEA RIDGE IRON ORE CO; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Fluor Corp → Pea Ridge Iron Ore Company Inc; 1950-01-01 to 1990-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Pea Ridge Iron Ore Company Inc → PEA RIDGE IRON ORE CO; 1990-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Woodridge Resource Corp → PEA RIDGE IRON ORE CO; 1990-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Woodridge Resource Corp → Pea Ridge Iron Ore Company Inc; 1990-07-01 to current/open; source msha-controller-operator-history