# Relationship history for MSHA mine 0801190

Current hierarchy: **John G  Grubbs → Suncoast Materials Inc → Suncoast Materials Inc Mine**

- 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:** Citrus Materials Inc → Suncoast Materials Inc Mine; 1992-02-01 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_mine:** G Alan  Bell → Suncoast Materials Inc Mine; 1992-02-01 to 1993-08-31; source msha-controller-operator-history
- **controller_controls_operator:** G Alan  Bell → Citrus Materials Inc; 1992-02-01 to 1993-08-31; source msha-controller-operator-history
- **operator_operates_mine:** West Florida Materials Inc → Suncoast Materials Inc Mine; 1993-09-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Young John R → Suncoast Materials Inc Mine; 1993-09-01 to 1994-02-28; source msha-controller-operator-history
- **controller_controls_operator:** Young John R → West Florida Materials Inc; 1993-09-01 to 1994-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Suncoast Materials Inc → Suncoast Materials Inc Mine; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John G  Grubbs → Suncoast Materials Inc Mine; 1994-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John G  Grubbs → Suncoast Materials Inc; 1994-03-01 to current/open; source msha-controller-operator-history