# Relationship history for MSHA mine 3401889

Current hierarchy: **Kiowa County-OK → Kiowa Co. Dist. #2 → Kiowa Co. Dist. #2**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Kiowa County-OK → Kiowa Co. Dist. #2; 2000-05-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kiowa Co. Dist. #2 → Kiowa Co. Dist. #2; 2002-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kiowa County-OK → Kiowa Co. Dist. #2; 2002-05-15 to current/open; source msha-controller-operator-history