# Relationship history for MSHA mine 2902571

Current hierarchy: **Amos J  Espinoza → ESPINOZA TRUCKING → Espinoza pit**

- 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:** ESPINOZA TRUCKING → Espinoza pit; 2025-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Amos J  Espinoza → Espinoza pit; 2025-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amos J  Espinoza → ESPINOZA TRUCKING; 2025-09-23 to current/open; source msha-controller-operator-history