# Relationship history for MSHA mine 4003442

Current hierarchy: **Vincenzo G Longobardo → Longobardo Stone Co LLC → Longobardo Site 1**

- 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

- **controller_controls_mine:** Avery C  York III → Longobardo Site 1; 2009-07-15 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** York & Sons Quarries → Longobardo Site 1; 2014-10-27 to 2026-08-10; source msha-controller-operator-history
- **controller_controls_operator:** Avery C  York III → York & Sons Quarries; 2014-10-27 to 2026-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Vincenzo G Longobardo → Longobardo Site 1; 2026-07-17 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Longobardo Stone Co LLC → Longobardo Site 1; 2026-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vincenzo G Longobardo → Longobardo Stone Co LLC; 2026-08-11 to current/open; source msha-controller-operator-history