# Relationship history for MSHA mine 5001349

Current hierarchy: **Hillis Kyle → Hillis Kyle → Kyle 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Hillis Kyle → Kyle Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hillis Kyle → Kyle Mine; 1980-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hillis Kyle → Hillis Kyle; 1980-04-01 to current/open; source msha-controller-operator-history