# Relationship history for MSHA mine 5400500

Current hierarchy: **Carlos Ortiz  Brunet → Aggregate,Inc → Aggregate,Inc**

- 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:** Aggregate,Inc → Aggregate,Inc; 2018-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carlos Ortiz  Brunet → Aggregate,Inc; 2018-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carlos Ortiz  Brunet → Aggregate,Inc; 2018-10-03 to current/open; source msha-controller-operator-history