# Relationship history for MSHA mine 5400073

Current hierarchy: **Jesus  Arce → CONSTRUCCIONES DEL VIVI, INC.. → ARENERO DE RIO ABAJO**

- 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:** Salva Concrete Industries Inc → ARENERO DE RIO ABAJO; 1950-01-01 to 2013-01-20; source msha-controller-operator-history
- **controller_controls_mine:** Ildefonso  Salva → ARENERO DE RIO ABAJO; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ildefonso  Salva → Salva Concrete Industries Inc; 1950-01-01 to 2013-01-20; source msha-controller-operator-history
- **operator_operates_mine:** CONSTRUCCIONES DEL VIVI, INC.. → ARENERO DE RIO ABAJO; 2013-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jesus  Arce → ARENERO DE RIO ABAJO; 2013-01-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jesus  Arce → CONSTRUCCIONES DEL VIVI, INC..; 2013-01-21 to current/open; source msha-controller-operator-history