# Relationship history for MSHA mine 3700192

Current hierarchy: **Strategic Commercial Realty Inc → Rawson Materials → White Rock 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

- **controller_controls_mine:** Salvatore E  Cherenzia → White Rock Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cherenzia Excavation Inc → White Rock Quarry; 2000-06-01 to 2018-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Salvatore E  Cherenzia → Cherenzia Excavation Inc; 2000-06-01 to 2018-03-06; source msha-controller-operator-history
- **controller_controls_mine:** O & G Industries Inc → White Rock Quarry; 2001-04-12 to 2025-04-16; source msha-controller-operator-history
- **operator_operates_mine:** Rawson Materials → White Rock Quarry; 2018-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** O & G Industries Inc → Rawson Materials; 2018-03-07 to 2025-04-16; source msha-controller-operator-history
- **controller_controls_mine:** Strategic Commercial Realty Inc → White Rock Quarry; 2025-04-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Strategic Commercial Realty Inc → Rawson Materials; 2025-04-17 to current/open; source msha-controller-operator-history