# Relationship history for MSHA mine 4607780

Current hierarchy: **Shelton George → Triple S Coal Mining Inc → 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Dry Fork Coal Company → Mine No 1 (1); 1989-10-01 to 1993-03-09; source msha-controller-operator-history
- **controller_controls_mine:** Hagy Thomas → Mine No 1 (1); 1989-10-01 to 1993-03-09; source msha-controller-operator-history
- **controller_controls_operator:** Hagy Thomas → Dry Fork Coal Company; 1989-10-01 to 1993-03-09; source msha-controller-operator-history
- **operator_operates_mine:** F A B - Keeney Corp → Mine No 1 (1); 1993-03-10 to 1994-04-20; source msha-controller-operator-history
- **controller_controls_mine:** Richard F  Baugh → Mine No 1 (1); 1993-03-10 to 1994-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Richard F  Baugh → F A B - Keeney Corp; 1993-03-10 to 1994-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Misti Coal Company Inc → Mine No 1 (1); 1994-04-21 to 1995-03-02; source msha-controller-operator-history
- **controller_controls_mine:** Harman Misti → Mine No 1 (1); 1994-04-21 to 1995-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Harman Misti → Misti Coal Company Inc; 1994-04-21 to 1995-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Silver Bullet Mining Inc → Mine No 1 (1); 1995-03-03 to 1996-04-22; source msha-controller-operator-history
- **controller_controls_mine:** Remines Randy → Mine No 1 (1); 1995-03-03 to 1996-04-22; source msha-controller-operator-history
- **controller_controls_operator:** Remines Randy → Silver Bullet Mining Inc; 1995-03-03 to 1996-04-22; source msha-controller-operator-history
- **operator_operates_mine:** Triple S Coal Mining Inc → Mine No 1 (1); 1996-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shelton George → Mine No 1 (1); 1996-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shelton George → Triple S Coal Mining Inc; 1996-04-23 to current/open; source msha-controller-operator-history