# Relationship history for MSHA mine 3003485

Current hierarchy: **Steve A  Van Valkenburgh → Steve Van Valkenburgh → Cutting Quarry**

- 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:** Steve Van Valkenburgh → Cutting Quarry; 2005-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Steve A  Van Valkenburgh → Cutting Quarry; 2005-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve A  Van Valkenburgh → Steve Van Valkenburgh; 2005-03-22 to current/open; source msha-controller-operator-history