# Relationship history for MSHA mine 3401507

Current hierarchy: **Carter County - Ok → Carter 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Carter County - Ok → District #2 Pits; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Carter County → District #2 Pits; 1985-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carter County - Ok → Carter County; 1985-07-01 to current/open; source msha-controller-operator-history