# Relationship history for MSHA mine 5001304

Current hierarchy: **Silver Bay Logging Company → Silver Bay Logging Company → Pit #3 Station 335+50**

- 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:** Silver Bay Logging Company → Pit #3 Station 335+50; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Silver Bay Logging Company → Pit #3 Station 335+50; 1979-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Silver Bay Logging Company → Silver Bay Logging Company; 1979-01-01 to current/open; source msha-controller-operator-history