# Relationship history for MSHA mine 4003662

Current hierarchy: **Brad  Barker; Terry  Barker → Barkers Enterprises, LLC → Barker Mine 1**

- 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:** Barkers Enterprises, LLC → Barker Mine 1; 2026-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Terry  Barker et al → Barker Mine 1; 2026-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Terry  Barker et al → Barkers Enterprises, LLC; 2026-09-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Barker et al → Barkers Enterprises, LLC; 2026-09-22 to current/open; source msha-controller-operator-history