---
schema_version: "secwatch.filing_event.v1"
accession: "0001558370-21-013416"
form_type: "8-K"
ticker: "MSB"
cik: "0000065172"
company_name: "MESABI TRUST"
filed_at: "2021-10-25T23:59:59+00:00"
generated_at: "2026-06-28T18:36:41.067541+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Cliffs plans to shift DR-grade pellet production away from Northshore, threatening Mesabi Trust royalties

## Summary
- Cliffs CEO said it will shift DR-grade pellet production from Northshore to Minorca due to 'unreasonable royalty structure'.
- Northshore will become a swing operation kept idle at times; Cliffs plans to stop third-party pellet sales.
- Cliffs has not notified Mesabi Trust of these changes nor requested royalty changes recently.
- Any royalty structure amendment requires approval from trustees and 66 2/3% of certificate holders.
- Quarterly royalty payment from Northshore for Q3 2021 due Oct. 30, 2021; summary to be filed later.

## SEC filing metadata
- accession: 0001558370-21-013416
- form_type: 8-K
- ticker: MSB
- cik: 0000065172
- company_name: MESABI TRUST
- filed_at: 2021-10-25T23:59:59+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/65172/000155837021013416/0001558370-21-013416-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/65172/000155837021013416/msb-20211025x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001558370-21-013416
- JSON: https://secwatch.observer/filing/0001558370-21-013416.json
- Plain text: https://secwatch.observer/filing/0001558370-21-013416.txt

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