# Relationship history for MSHA mine 4201465

Current hierarchy: **5 M Inc → 5 M Inc → Silver Reef 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:** 5 M Inc → Silver Reef Mine; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** 5 M Inc → Silver Reef Mine; 1978-03-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** 5 M Inc → 5 M Inc; 1978-03-09 to current/open; source msha-controller-operator-history