# Relationship history for MSHA mine 2602466

Current hierarchy: **Gregory G  Austin → Saga Exploration Company → MODARELLI 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Gregory G  Austin → MODARELLI MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Saga Exploration Company → MODARELLI MINE; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gregory G  Austin → Saga Exploration Company; 2001-08-01 to current/open; source msha-controller-operator-history