# Relationship history for MSHA mine 2601622

Current hierarchy: **Geertson Phillip → Phillip Geertson → Star Creek 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Phillip Geertson → Star Creek Mine; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Geertson Phillip → Star Creek Mine; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Geertson Phillip → Phillip Geertson; 1980-02-01 to current/open; source msha-controller-operator-history