# Relationship history for MSHA mine 4300565

Current hierarchy: **Robert  Delabruere Jr → Delabruere & Son Inc → DELABRUERE PIT**

- 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:** Delabruere & Son Inc → DELABRUERE PIT; 2001-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Delabruere Jr → DELABRUERE PIT; 2001-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Delabruere Jr → Delabruere & Son Inc; 2001-09-01 to current/open; source msha-controller-operator-history