# Relationship history for MSHA mine 5001588

Current hierarchy: **Ron  Wrede → Ron Wrede → Discovery #3**

- 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:** Ron Wrede → Discovery #3; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ron  Wrede → Discovery #3; 1989-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ron  Wrede → Ron Wrede; 1989-09-01 to current/open; source msha-controller-operator-history