# Relationship history for MSHA mine 4608153

Current hierarchy: **Sidney R  Young III → Browning Fork Coal Services Inc → No 4**

- 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:** Stephen  Hairston → No 4; 1992-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mindy Coal Company Inc → No 4; 1992-03-01 to 1992-11-18; source msha-controller-operator-history
- **controller_controls_mine:** Montgomery Guy → No 4; 1992-03-01 to 1992-11-18; source msha-controller-operator-history
- **controller_controls_operator:** Montgomery Guy → Mindy Coal Company Inc; 1992-03-01 to 1992-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Kazin Coal Inc → No 4; 1992-11-19 to 1994-02-22; source msha-controller-operator-history
- **controller_controls_operator:** Stephen  Hairston → Kazin Coal Inc; 1992-11-19 to 1994-02-22; source msha-controller-operator-history
- **operator_operates_mine:** Lariat Energy Inc → No 4; 1994-02-23 to 1997-02-06; source msha-controller-operator-history
- **controller_controls_mine:** Freeman  Lambert → No 4; 1994-02-23 to 1997-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Freeman  Lambert → Lariat Energy Inc; 1994-02-23 to 1997-02-06; source msha-controller-operator-history
- **controller_controls_mine:** Sidney R  Young III → No 4; 1996-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Browning Fork Coal Services Inc → No 4; 1997-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sidney R  Young III → Browning Fork Coal Services Inc; 1997-02-07 to current/open; source msha-controller-operator-history