# Relationship history for MSHA mine 2200693

Current hierarchy: **Pat  Fore Jr → Fore Sand & Gravel Inc → Mikes Island Pit**

- 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:** Meridian Aggregates Company LP → Mikes Island Pit; 1991-03-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mike'S Island Mining Company Inc → Mikes Island Pit; 1998-01-01 to 1998-06-29; source msha-controller-operator-history
- **controller_controls_mine:** Garvin S  Sharp → Mikes Island Pit; 1998-01-01 to 1998-06-29; source msha-controller-operator-history
- **controller_controls_operator:** Garvin S  Sharp → Mike'S Island Mining Company Inc; 1998-01-01 to 1998-06-29; source msha-controller-operator-history
- **operator_operates_mine:** Meridian Aggregates Company → Mikes Island Pit; 1998-06-30 to 2000-02-06; source msha-controller-operator-history
- **controller_controls_operator:** Meridian Aggregates Company LP → Meridian Aggregates Company; 1998-06-30 to 2000-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Fore Sand & Gravel Inc → Mikes Island Pit; 2000-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pat  Fore Jr → Mikes Island Pit; 2000-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pat  Fore Jr → Fore Sand & Gravel Inc; 2000-02-07 to current/open; source msha-controller-operator-history