# Relationship history for MSHA mine 1519985

Current hierarchy: **Vic  DiGeronimo Jr → Independence Excavating → Trak R450 Rental**

- 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

- **controller_controls_mine:** Vic  DiGeronimo Jr et al → Trak R450 Rental; 2002-07-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Independence Excavating → Trak R450 Rental; 2026-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vic  DiGeronimo Jr et al → Independence Excavating; 2026-02-13 to current/open; source msha-controller-operator-history