# Relationship history for MSHA mine 4608176

Current hierarchy: **Brock Mining Inc → Brock Mining Inc → Mountaineer Mine No 1 [1]**

- 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

- **controller_controls_mine:** Joseph C  Turley III et al → Mountaineer Mine No 1 [1]; 1987-10-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Leckie Smokeless Coal Company → Mountaineer Mine No 1 [1]; 1992-04-01 to 1997-11-10; source msha-controller-operator-history
- **controller_controls_operator:** Joseph C  Turley III et al → Leckie Smokeless Coal Company; 1992-04-01 to 1997-11-10; source msha-controller-operator-history
- **controller_controls_mine:** Brock Mining Inc → Mountaineer Mine No 1 [1]; 1992-09-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Royal Scot Minerals Inc → Mountaineer Mine No 1 [1]; 1997-11-11 to 1998-03-11; source msha-controller-operator-history
- **controller_controls_mine:** Rackwood Mineral Holdings Plc → Mountaineer Mine No 1 [1]; 1997-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rackwood Mineral Holdings Plc → Royal Scot Minerals Inc; 1997-11-11 to 1998-03-11; source msha-controller-operator-history
- **operator_operates_mine:** Brock Mining Inc → Mountaineer Mine No 1 [1]; 1998-03-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brock Mining Inc → Brock Mining Inc; 1998-03-12 to current/open; source msha-controller-operator-history