# Relationship history for MSHA mine 2700561

Current hierarchy: **Rocci  DeLucia Sr → Frank DeLucia & Son Inc. → Metso ST 2.8 Screener**

- 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

- **operator_operates_mine:** Frank DeLucia & Son Inc. → Metso ST 2.8 Screener; 2025-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rocci  DeLucia Sr → Metso ST 2.8 Screener; 2025-01-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rocci  DeLucia Sr → Frank DeLucia & Son Inc.; 2025-01-13 to current/open; source msha-controller-operator-history