Hugo North Extension (HNE) Lift 1 Feasibility Study: $185M NPV Over a 17-Year Mine Life
Entrée Resources Ltd.'s Hugo North Extension (HNE) Lift 1 in Mongolia, Oyu Tolgoi has a Feasibility Study outlining an after-tax NPV of $185M. The proposed mine plan runs 17 years.
Entrée Resources Ltd.'s Hugo North Extension (HNE) Lift 1 has reported Feasibility Study results for the copper-gold-silver project in Mongolia, Oyu Tolgoi. The study headlines an after-tax net present value of $185M. It reflects Entrée Resources Ltd.'s (ETG.TO) latest disclosed economics for the asset.
Economics. The after-tax NPV is $185M. All-in sustaining costs are pegged at 1.26 USD/lb payable Cu. Economics are based on Copper $3.25/lb, Gold $1,591.00/oz, Silver $21.08/oz.
Production and mine plan. The project envisions an underground (block cave) operation. Life of mine is 17 years. Average head grade is 1.5% Cu, 0.53 g/t Au, 3.6 g/t Ag.
Resources and ownership. Mineral reserves: 40 Mt Probable @ 1.5% Cu, 0.53 g/t Au, 3.6 g/t Ag; 1,340 Mlb Cu, 676 koz Au, 4,613 koz Ag contained. The company holds a 20% interest in the project.
These figures are extracted from Entrée Resources Ltd.'s technical disclosures and reflect the most recent Feasibility Study 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.
Our Analysis
- NPV after-tax
- $185M
- Mine life
- 17yrs
- Study price assumption
- Copper $3.25/lb, Gold $1,591.00/oz, Silver $21.08/oz
- Spot copper today
- $6.36/lb
The after-tax IRR is not provided, but the NPV of $185M at roughly 0.4x market cap signals a modest valuation gap that cuts both ways: the market may be pricing in execution risk, or the asset may be underappreciated. The study’s discount rate is absent, so conservatism cannot be assessed—this is a notable omission for judging NPV credibility. The 17-year mine life supports steady-state cash flows, but capital intensity relative to NPV and market cap is the core funding risk; a developer with this market cap faces material dilution or financing hurdles to build.
The study’s price deck—copper at $3.25/lb, gold at $1,591/oz, silver at $21.08/oz—sits far below the current copper spot of $6.36/lb, implying significant upside if realized prices persist. However, this also raises the question of whether the study’s base-case returns are artificially depressed or the spot is unsustainable. The single most important risk is financing: with NPV below market cap, the project likely requires substantial equity or debt, and any cost overruns could severely dilute shareholders.
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.