# Relationship history for MSHA mine 2103340

Current hierarchy: **Iron Units LLC; Ferrous Resources LLC; Kobe Iron Nuggett LLC; Ferrometri → Mesabi Nugget, LLC → Mesabi Nugget, 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, LLC → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ferrometrics Inc  et al → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferrometrics Inc  et al → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kobe Iron Nuggett LLC  et al → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Iron Units LLC  et al → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ferrous Resources LLC  et al → Mesabi Nugget, LLC; 2002-12-11 to current/open; source msha-controller-operator-history