# Relationship history for MSHA mine 3401680

Current hierarchy: **Haskell County-Ok → Haskell County → District #2 Pits**

- 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:** Haskell County → District #2 Pits; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Haskell County-Ok → District #2 Pits; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Haskell County-Ok → Haskell County; 1989-05-01 to current/open; source msha-controller-operator-history