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, near Eveleth) has a production guidance outlining an after-tax NPV of $591M. The mine plan runs 51 years at about 5.1 MLT pellets/y 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, near Eveleth). 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 Reserve/Resource evaluation used US$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/y. Average head grade is 22.3% MagFe (crude ore). 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 50% of 476 projects we track
- Mine life
- 51yrs
- Study price assumption
- Three-Year Trailing Average Revenue $98/WLT pellet; Mineral Reserve/Resource evaluation used US$90/LT wet standard pellet price FOB Lake Superior
This asset sits in the upper half of the 476 projects we track on after-tax NPV, but only just: an NPV of $591M ranks above 50% of that universe, which is another way of saying it is a median proposition rather than a standout. For an investor, that rank is the honest starting point. This is not a project whose returns force a re-rating on their own; it is one holding inside a diversified portfolio, the eighth of eight projects we track for a US$7.13B mid-cap. The relevant question is not whether the number is good in isolation but what it adds to a company already carrying seven other assets.
The constraint that matters most is scale, and it runs the opposite way to the usual development story. These are operating-mine figures, not a forward study, so the numbers carry the confidence of a producing asset rather than a scoping-level estimate. The NPV is well below the company's market cap on a rough currency-adjusted basis, which tells you this single operation is not what the equity is priced on. With a 51-year mine life, the cash flows are long-dated and the value is spread thin across decades, so near-term earnings and the rest of the portfolio will dominate how the shares trade.
Jurisdiction is the other lens. Northeastern Minnesota's Mesabi Iron Range is a established, mining-friendly US district, which lowers permitting and political risk relative to most iron ore regions, but it also means the asset is priced in a market that knows it well. The study's own price assumptions, a three-year trailing average revenue of $98 per WLT pellet and a $90 per LT wet standard pellet price FOB Lake Superior for reserve evaluation, are the sensitivity that decides the outcome. Whether those pellet prices hold across a 51-year life is the single question that determines whether this median-ranked asset earns its place.
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.