# Relationship history for MSHA mine 0301924

Current hierarchy: **C David  Barron → Arkansas Infrastructure → A I I - Greers Ferry 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Arkansas Infrastructure → A I I - Greers Ferry Mine; 2006-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** C David  Barron → A I I - Greers Ferry Mine; 2006-01-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** C David  Barron → Arkansas Infrastructure; 2006-01-04 to current/open; source msha-controller-operator-history