# Relationship history for MSHA mine 1401853

Current hierarchy: **Orville  Spray III → Venture Corporation → ASHLAND 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Orville  Spray Jr → ASHLAND QUARRY; 1979-01-01 to 2008-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Orville  Spray III → ASHLAND QUARRY; 2008-09-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Venture Corporation → ASHLAND QUARRY; 2025-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Orville  Spray III → Venture Corporation; 2025-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Orville  Spray Jr → Venture Corporation; 2025-05-12 to 2008-09-14; source msha-controller-operator-history