# Relationship history for MSHA mine 0600774

Current hierarchy: **Bonnie  Barron → The Lynn Corporation C/O BARRON → N.H.D. 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

- **controller_controls_mine:** Bonnie  Barron → N.H.D. Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** The Lynn Corporation C/O BARRON → N.H.D. Pit; 2012-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bonnie  Barron → The Lynn Corporation C/O BARRON; 2012-07-11 to current/open; source msha-controller-operator-history