# Relationship history for MSHA mine 3304322

Current hierarchy: **Zeigler Jeffrey E → J E Zeigler Dozer Service → D-1056**

- 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:** J E Zeigler Dozer Service → D-1056; 1994-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zeigler Jeffrey E → D-1056; 1994-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zeigler Jeffrey E → J E Zeigler Dozer Service; 1994-02-01 to current/open; source msha-controller-operator-history