# Relationship history for MSHA mine 0500997

Current hierarchy: **Dolores Irene  Palizzi → Carl Palizzi Inc → JONES FINE SAND**

- 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:** Carl Palizzi Inc → JONES FINE SAND; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl  Palizzi → JONES FINE SAND; 1950-01-01 to 2021-01-21; source msha-controller-operator-history
- **controller_controls_operator:** Carl  Palizzi → Carl Palizzi Inc; 1950-01-01 to 2021-01-21; source msha-controller-operator-history
- **controller_controls_mine:** Dolores Irene  Palizzi → JONES FINE SAND; 2021-01-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dolores Irene  Palizzi → Carl Palizzi Inc; 2021-01-22 to current/open; source msha-controller-operator-history