# Relationship history for MSHA mine 0203214

Current hierarchy: **Auleriano  Farias-Mendoza → Mendoza Quarry → Mendoza Quarry**

- 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

- **operator_operates_mine:** Mendoza Quarry → Mendoza Quarry; 2008-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Auleriano  Farias-Mendoza → Mendoza Quarry; 2008-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Auleriano  Farias-Mendoza → Mendoza Quarry; 2008-03-24 to current/open; source msha-controller-operator-history