# Relationship history for MSHA mine 0201487

Current hierarchy: **Arizona Mines Development Inc & Arizona Western Mi → Arizona Mines Development Inc → Old Eagle (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:** Arizona Mines Development Inc → Old Eagle (Mine); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arizona Mines Development Inc & Arizona Western Mi → Old Eagle (Mine); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arizona Mines Development Inc & Arizona Western Mi → Arizona Mines Development Inc; 1950-01-01 to current/open; source msha-controller-operator-history