# Relationship history for MSHA mine 5400354

Current hierarchy: **Edwin (Torres)  Del Valle → Constructora Mayaguezana S E → Arenero Del Valle**

- 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

- **controller_controls_mine:** Edwin (Torres)  Del Valle → Arenero Del Valle; 1992-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Constructora Mayaguezana S E → Arenero Del Valle; 1993-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edwin (Torres)  Del Valle → Constructora Mayaguezana S E; 1993-07-01 to current/open; source msha-controller-operator-history