# Relationship history for MSHA mine 3609688

Current hierarchy: **Robert J.  McGill → Robert  J. McGill → Beason Mine**

- 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:** Robert  J. McGill → Beason Mine; 2008-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert J.  McGill → Beason Mine; 2008-12-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert J.  McGill → Robert  J. McGill; 2008-12-08 to current/open; source msha-controller-operator-history