# Relationship history for MSHA mine 5400457

Current hierarchy: **Juan A  Nunez → Juan A Nunez → Nunez Aggregates**

- 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:** Juan A Nunez → Nunez Aggregates; 2004-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Juan A  Nunez → Nunez Aggregates; 2004-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Juan A  Nunez → Juan A Nunez; 2004-05-17 to current/open; source msha-controller-operator-history