# Relationship history for MSHA mine 0202511

Current hierarchy: **Blackburn Don → Gold Ridge Inc → Red Eye & Linda**

- 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

- **operator_operates_mine:** Gold Ridge Inc → Red Eye & Linda; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Blackburn Don → Red Eye & Linda; 1990-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blackburn Don → Gold Ridge Inc; 1990-03-01 to current/open; source msha-controller-operator-history