# Relationship history for MSHA mine 1701176

Current hierarchy: **Vaughn D.  Thibodeau II → General Contractor Vaughn D. Thibodeau II Inc. → Sorey Road Pit**

- 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:** Vaughn D.  Thibodeau II → Sorey Road Pit; 2012-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** General Contractor Vaughn D. Thibodeau II Inc. → Sorey Road Pit; 2026-04-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vaughn D.  Thibodeau II → General Contractor Vaughn D. Thibodeau II Inc.; 2026-04-23 to current/open; source msha-controller-operator-history