# Relationship history for MSHA mine 3609365

Current hierarchy: **Jonathan  Schilowitz → Mellott Company → Mellott - Riverton 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:** H B Mellott Estate Inc → Mellott - Riverton Quarry; 1950-01-01 to 2022-04-04; source msha-controller-operator-history
- **operator_operates_mine:** Mellott Company → Mellott - Riverton Quarry; 2005-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** H B Mellott Estate Inc → Mellott Company; 2005-08-20 to 2022-04-04; source msha-controller-operator-history
- **controller_controls_mine:** Jonathan  Schilowitz → Mellott - Riverton Quarry; 2022-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jonathan  Schilowitz → Mellott Company; 2022-04-05 to current/open; source msha-controller-operator-history