# Relationship history for MSHA mine 4801651

Current hierarchy: **Doug  Devlon → Hyland Enterprises Inc → Jaure Pit**

- 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:** Hyland Enterprises Inc → Jaure Pit; 2004-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Doug  Devlon → Jaure Pit; 2004-04-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Doug  Devlon → Hyland Enterprises Inc; 2004-04-05 to current/open; source msha-controller-operator-history