# Relationship history for MSHA mine 1601483

Current hierarchy: **Neal Barrett  Jenkins → Bearco Construction LLC → Bearco Construction Aggregates**

- 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:** Bearco Construction LLC → Bearco Construction Aggregates; 2008-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Neal Barrett  Jenkins → Bearco Construction Aggregates; 2008-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Neal Barrett  Jenkins → Bearco Construction LLC; 2008-08-25 to current/open; source msha-controller-operator-history