# Relationship history for MSHA mine 5002084

Current hierarchy: **Nana Native Cooperation → Native Village of Kiana → Kiana A-1 Gravel Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Native Village of Kiana → Kiana A-1 Gravel Pit; 2021-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Nana Native Cooperation → Kiana A-1 Gravel Pit; 2021-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nana Native Cooperation → Native Village of Kiana; 2021-12-07 to current/open; source msha-controller-operator-history