# Relationship history for MSHA mine 3901647

Current hierarchy: **Gerrit Donald  Overweg → GoGo → GoGo 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:** GoGo → GoGo Pit; 2020-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gerrit Donald  Overweg → GoGo Pit; 2020-05-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gerrit Donald  Overweg → GoGo; 2020-05-06 to current/open; source msha-controller-operator-history