# Relationship history for MSHA mine 3201089

Current hierarchy: **Dane Q  Witzel → Witzel Construction LLC → Ridley Pit**

- 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:** Witzel Construction LLC → Ridley Pit; 2023-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dane Q  Witzel → Ridley Pit; 2023-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dane Q  Witzel → Witzel Construction LLC; 2023-03-24 to current/open; source msha-controller-operator-history