United Taconite Property (Thunderbird Mine North & South / Fairlane Facility) Production Update: $591M NPV Over a 51-Year Mine Life
Cleveland-Cliffs Inc.'s United Taconite Property (Thunderbird Mine North & South / Fairlane Facility) in St. Louis County, Northeastern Minnesota, USA (Mesabi Iron Range, Eveleth/Forbes) has a production guidance outlining an after-tax NPV of $591M. The mine plan runs 51 years at about 5.1 MLT pellets per year.
Cleveland-Cliffs Inc.'s United Taconite Property (Thunderbird Mine North & South / Fairlane Facility) has reported production guidance results for the iron ore (magnetite/taconite pellets) project in St. Louis County, Northeastern Minnesota, USA (Mesabi Iron Range, Eveleth/Forbes). The study headlines an after-tax net present value of $591M at a 10% discount rate. It reflects Cleveland-Cliffs Inc.'s (CLF) latest disclosed economics for the asset.
Economics. The after-tax NPV is $591M using a 10% discount rate. Economics are based on Three-Year Trailing Average Revenue $98/WLT pellet; Mineral Resources optimized using US$90/LT pellet value; Mineral Reserves at $90/LT wet standard pellet price FOB Lake Superior.
Production and mine plan. The project envisions an open-pit operation. Life of mine is 51 years. Average annual production is approximately 5.1 MLT pellets. Average head grade is 22.3% MagFe. Metallurgical recovery averages 33.3%. The open-pit strip ratio is 1.1.
Resources and ownership. The company holds a 100% interest in the project.
These figures are extracted from Cleveland-Cliffs Inc.'s technical disclosures and reflect the most recent Production Update on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.
Reserves & Resources
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Proven | 143.1 MLT | 23.1% MagFe | 49.6 MLT wet pellets |
| Probable | 631.5 MLT | 22.1% MagFe | 208.0 MLT wet pellets |
| Proven & Probable | 774.6 MLT | 22.3% MagFe | 257.6 MLT wet pellets |
| Category | Tonnage | Grade | Contained |
|---|---|---|---|
| Measured | 91.8 MLT | 23.6% MagFe | 32.5 MLT wet pellets |
| Indicated | 638.6 MLT | 22.2% MagFe | 199.2 MLT wet pellets |
| Measured & Indicated | 730.4 MLT | 22.3% MagFe | 231.8 MLT wet pellets |
| Inferred | 25.9 MLT | 21.5% MagFe | 8.0 MLT wet pellets |
Our Analysis
- NPV after-tax
- $591M
higher than 47% of 537 projects we track
- Mine life
- 51yrs
- Study price assumption
- Three-Year Trailing Average Revenue $98/WLT pellet; Mineral Resources optimized using US$90/LT pellet value; Mineral Reserves at $90/LT wet standard pellet price FOB Lake Superior
This is an operating iron ore asset on Minnesota's Mesabi Range, and the first thing to say about it is that it is not a development story at all. The after-tax NPV of $591M ranks higher than 47% of the 537 projects we track across all commodities: squarely mid-pack, with nothing about the number that stands out in either direction. For an investor, that rank is the honest headline. This is not a mispriced outlier, and it is not a top-decile asset. It is a solid, producing operation whose value sits in the middle of a large peer set.
The constraint that matters most is scale, and it runs the opposite way to most projects we cover. At US$6.95B, the company is a mid-cap, and the NPV sits well below its market cap on a rough currency-adjusted basis. That inverts the usual funding question: there is no build to finance here, no capex measured against equity, and no dilution risk tied to construction. What it does mean is that this single asset is a modest slice of a diversified portfolio of 16 projects, so its mid-pack NPV moves the equity only marginally. The 51-year mine life is the real asset: a long, operating cash-generating base rather than a finite development window.
Jurisdiction supports that read. Northeastern Minnesota is a long-established iron ore district, and the study's own pricing is deliberately restrained, built on a three-year trailing average of $98/WLT pellet revenue with resources and reserves optimised at $90/LT. Those are the study's assumptions, and the pellet price is the variable that decides the outcome: revenue per tonne is what this operation lives or dies on, and the study's figures are the only basis on which to judge it. Which leaves the single question that matters: does a mid-pack, long-life operation inside a 16-asset portfolio earn enough of the company's attention and capital to be valued on its own merits?
Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.
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