# Relationship history for MSHA mine 4606591

Current hierarchy: **Zottola Henry → Z & F Development Company → Danielle #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:** Z & F Development Company → Danielle #1; 1982-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Zottola Henry → Danielle #1; 1982-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zottola Henry → Z & F Development Company; 1982-09-01 to current/open; source msha-controller-operator-history