# Relationship history for MSHA mine 2103689

Current hierarchy: **Kobe Iron Nugget, LLC; Ferrous Resources, LLC → Mesabi Nugget Delaware, LLC → Mesabi Nugget Delaware, LLC**

- 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:** Mesabi Nugget Delaware, LLC → Mesabi Nugget Delaware, LLC; 2009-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ferrous Resources, LLC et al → Mesabi Nugget Delaware, LLC; 2009-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferrous Resources, LLC et al → Mesabi Nugget Delaware, LLC; 2009-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kobe Iron Nugget, LLC et al → Mesabi Nugget Delaware, LLC; 2009-11-18 to current/open; source msha-controller-operator-history