# Relationship history for MSHA mine 5400031

Current hierarchy: **Forestier Luis A → Luis A Forestier → Arenero Forestier-Aguadilla**

- 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:** Luis A Forestier → Arenero Forestier-Aguadilla; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Forestier Luis A → Arenero Forestier-Aguadilla; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Forestier Luis A → Luis A Forestier; 1950-01-01 to current/open; source msha-controller-operator-history