# Relationship history for MSHA mine 0600838

Current hierarchy: **Zachary J Wood → Woodco Properties LLC → Woodco Properties**

- 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:** Woodco Properties LLC → Woodco Properties; 2023-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zachary J Wood → Woodco Properties; 2023-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zachary J Wood → Woodco Properties LLC; 2023-09-18 to current/open; source msha-controller-operator-history