# Relationship history for MSHA mine 3609109

Current hierarchy: **Zane  Snedaker → Snedaker Trucking → Snedaker**

- 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:** Snedaker Trucking → Snedaker; 2002-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zane  Snedaker → Snedaker; 2002-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zane  Snedaker → Snedaker Trucking; 2002-07-16 to current/open; source msha-controller-operator-history