# Relationship history for MSHA mine 4300783

Current hierarchy: **Barry  Berard → Berards Excavating → Joe Lora 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:** Berards Excavating → Joe Lora Pit; 2017-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Barry  Berard → Joe Lora Pit; 2017-07-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Barry  Berard → Berards Excavating; 2017-07-24 to current/open; source msha-controller-operator-history