# Relationship history for MSHA mine 5400412

Current hierarchy: **Ramon E  Avalo → Arenero De La Montana → Arenero De La Montana**

- 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

- **operator_operates_mine:** Arenero De La Montana → Arenero De La Montana; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ramon E  Avalo et al → Arenero De La Montana; 1998-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ramon E  Avalo et al → Arenero De La Montana; 1998-03-01 to current/open; source msha-controller-operator-history