# Relationship history for MSHA mine 3604795

Current hierarchy: **Kuhar Mike → Mike Kuhar → Kuhar Strip**

- 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:** Mike Kuhar → Kuhar Strip; 1973-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kuhar Mike → Kuhar Strip; 1973-09-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kuhar Mike → Mike Kuhar; 1973-09-18 to current/open; source msha-controller-operator-history