# Relationship history for MSHA mine 4703385

Current hierarchy: **Duane A  Bushar → Bushar Trucking & Exc. → Goober's Pond**

- 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:** Bushar Trucking & Exc. → Goober's Pond; 2004-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Duane A  Bushar → Goober's Pond; 2004-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Duane A  Bushar → Bushar Trucking & Exc.; 2004-06-02 to current/open; source msha-controller-operator-history