# Relationship history for MSHA mine 4606917

Current hierarchy: **Seabolt Gregory L → Coal Technology Inc → Triple A Coals Deep Mine #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:** Anderson Arthur L → Triple A Coals Deep Mine #1; 1976-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Triple A Coals Inc → Triple A Coals Deep Mine #1; 1985-04-01 to 1989-04-02; source msha-controller-operator-history
- **controller_controls_operator:** Anderson Arthur L → Triple A Coals Inc; 1985-04-01 to 1989-04-02; source msha-controller-operator-history
- **operator_operates_mine:** Mineral Mining Inc → Triple A Coals Deep Mine #1; 1989-04-03 to 1994-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Griffith James E → Triple A Coals Deep Mine #1; 1989-04-03 to 1994-08-04; source msha-controller-operator-history
- **controller_controls_operator:** Griffith James E → Mineral Mining Inc; 1989-04-03 to 1994-08-04; source msha-controller-operator-history
- **controller_controls_mine:** Seabolt Gregory L → Triple A Coals Deep Mine #1; 1993-08-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coal Technology Inc → Triple A Coals Deep Mine #1; 1994-08-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Seabolt Gregory L → Coal Technology Inc; 1994-08-05 to current/open; source msha-controller-operator-history