---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-22-001076"
form_type: "8-K"
ticker: "MSB"
cik: "0000065172"
company_name: "MESABI TRUST"
filed_at: "2022-02-14T23:59:59+00:00"
generated_at: "2026-06-27T08:36:37.490847+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Cleveland-Cliffs idles Northshore mine Spring to Fall 2022; Mesabi Trust royalties at risk

## Summary
- Cliffs to idle Northshore from Spring through at least Fall 2022; no production, shipments, or royalty payments during idling.
- CEO cited increased scrap usage and 'ridiculous royalty structure' with Mesabi Trust as reasons for the idle.
- Minimum advance royalty (~$977k for 2021) remains payable regardless of production; quarterly payments still required.
- Cliffs also limiting third-party pellet sales; idle could extend beyond Fall.
- Any royalty structure change requires approval of 66 2/3% of trust certificate holders.

## SEC filing metadata
- accession: 0001558370-22-001076
- form_type: 8-K
- ticker: MSB
- cik: 0000065172
- company_name: MESABI TRUST
- filed_at: 2022-02-14T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/65172/000155837022001076/0001558370-22-001076-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/65172/000155837022001076/msb-20220214x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-22-001076
- JSON: https://secwatch.observer/filing/0001558370-22-001076.json
- Plain text: https://secwatch.observer/filing/0001558370-22-001076.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.