# Relationship history for MSHA mine 4608865

Current hierarchy: **Warren M  Hunter → Vandalia Stone Inc → Vandalia Stone Inc.**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Vandalia Stone Inc → Vandalia Stone Inc.; 2000-12-01 to 2001-10-25; source msha-controller-operator-history
- **controller_controls_mine:** Warren M  Hunter → Vandalia Stone Inc.; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren M  Hunter → Vandalia Stone Inc; 2000-12-01 to 2001-10-25; source msha-controller-operator-history
- **operator_operates_mine:** Table Rock Quarries LLC. → Vandalia Stone Inc.; 2001-10-26 to 2008-06-17; source msha-controller-operator-history
- **controller_controls_mine:** Byron V  Boyd → Vandalia Stone Inc.; 2001-10-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Byron V  Boyd → Table Rock Quarries LLC.; 2001-10-26 to 2008-06-17; source msha-controller-operator-history
- **controller_controls_operator:** Kevin  Washburn Et Al → Table Rock Quarries LLC.; 2001-10-26 to 2008-06-17; source msha-controller-operator-history
- **operator_operates_mine:** Vandalia Stone Inc → Vandalia Stone Inc.; 2008-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren M  Hunter → Vandalia Stone Inc; 2008-06-18 to current/open; source msha-controller-operator-history