# Relationship history for MSHA mine 2401452

Current hierarchy: **Clutis Wayne E → Wayne Clutis Mining Inc → Friday 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Boggs Ray L & Byron E → Friday Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lehman Mining Company → Friday Pit; 1979-01-01 to 1980-12-01; source msha-controller-operator-history
- **controller_controls_mine:** Lehman Mining Company → Friday Pit; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lehman Mining Company → Lehman Mining Company; 1979-01-01 to 1980-12-01; source msha-controller-operator-history
- **operator_operates_mine:** Boggs Brothers Construction Company → Friday Pit; 1980-12-02 to 1981-07-19; source msha-controller-operator-history
- **controller_controls_operator:** Boggs Ray L & Byron E → Boggs Brothers Construction Company; 1980-12-02 to 1981-07-19; source msha-controller-operator-history
- **operator_operates_mine:** Wayne Clutis Mining Inc → Friday Pit; 1981-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clutis Wayne E → Friday Pit; 1981-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clutis Wayne E → Wayne Clutis Mining Inc; 1981-07-20 to current/open; source msha-controller-operator-history