# Relationship history for MSHA mine 5001603

Current hierarchy: **Jerome  Birch → Taiga Mining Company, Inc. → Taiga Mining Company - Hog River**

- 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:** Taiga Mining Company, Inc. → Taiga Mining Company - Hog River; 1990-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jerome  Birch → Taiga Mining Company - Hog River; 1990-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jerome  Birch → Taiga Mining Company, Inc.; 1990-06-01 to current/open; source msha-controller-operator-history