# Relationship history for MSHA mine 5001657

Current hierarchy: **John R  Hoffman → John R Hoffman → Millers Mine**

- 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:** John R Hoffman → Millers Mine; 2018-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John R  Hoffman → Millers Mine; 2018-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John R  Hoffman → John R Hoffman; 2018-05-24 to current/open; source msha-controller-operator-history