# Relationship history for MSHA mine 5400427

Current hierarchy: **Miguel H  Placer → Agregados Vista De La Montana → AGREGADOS VISTA DE LA MONTONIA**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Agregados Vista De La Montana → AGREGADOS VISTA DE LA MONTONIA; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Miguel H  Placer → AGREGADOS VISTA DE LA MONTONIA; 1999-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Miguel H  Placer → Agregados Vista De La Montana; 1999-10-01 to current/open; source msha-controller-operator-history