# Relationship history for MSHA mine 4202412

Current hierarchy: **Stephen G  Bunn → Broken Arrow/McFarland & Hullinger → Delta Silca West**

- 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

- **controller_controls_mine:** Stephen G  Bunn → Delta Silca West; 2005-01-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Broken Arrow/McFarland & Hullinger → Delta Silca West; 2005-06-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephen G  Bunn → Broken Arrow/McFarland & Hullinger; 2005-06-14 to current/open; source msha-controller-operator-history