# Relationship history for MSHA mine 4609385

Current hierarchy: **Kevin J  Bealko → Marion Docks Inc → Marion Docks Inc**

- 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:** Kevin J  Bealko → Marion Docks Inc; 1985-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Marion Docks Inc → Marion Docks Inc; 2010-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin J  Bealko → Marion Docks Inc; 2010-09-23 to current/open; source msha-controller-operator-history