# Relationship history for MSHA mine 5001488

Current hierarchy: **Baily Oscar → Alaska Standard Mining Inc → Mile No 4**

- 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:** Alaska Standard Mining Inc → Mile No 4; 1985-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Baily Oscar → Mile No 4; 1985-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Baily Oscar → Alaska Standard Mining Inc; 1985-07-01 to current/open; source msha-controller-operator-history