# Relationship history for MSHA mine 5002059

Current hierarchy: **Arctic Slope Regional Corp → ASRC Construction Holding Company → Barrow City Pit Screen**

- 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:** ASRC Construction Holding Company → Barrow City Pit Screen; 2017-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Arctic Slope Regional Corp → Barrow City Pit Screen; 2017-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Arctic Slope Regional Corp → ASRC Construction Holding Company; 2017-03-07 to current/open; source msha-controller-operator-history