Oyu Tolgoi Project (Oyut & Hugo North) Feasibility Study: $7.36B Capex
Rio Tinto's Oyu Tolgoi Project (Oyut & Hugo North) in South Gobi region, Mongolia has a Feasibility Study outlining initial capital of $7.36B.
Rio Tinto's Oyu Tolgoi Project (Oyut & Hugo North) has reported Feasibility Study results for the copper project in South Gobi region, Mongolia. It reflects Rio Tinto's (RIO) latest disclosed economics for the asset.
Economics. Initial capital expenditure is estimated at $7.36B, with life-of-mine sustaining capital of $5.00B. Economics are based on Mineral Reserve valuations: USc 350.80/lb copper, US$1,496.75/oz gold, US$20.43/oz silver. Mineral Resource valuations: USc 320.30/lb copper, US$1,479.82/oz gold, US$19.23/oz silver, US$9.29/lb molybdenum..
Production and mine plan. The project envisions an open-pit & underground operation.
Resources and ownership. Mineral reserves: As at 31 Dec 2022: Mineral Reserves include Oyut and Hugo North deposits. Hugo Dummett North Mineral Reserves include ~1.4 Mt stockpiled material at 0.51% Cu, 0.16 g/t Au, 1.25 g/t Ag.. Mineral resources: As at 31 Dec 2022 (100% basis, excl. Reserves): Measured & Indicated and Inferred resources by deposit (Oyut, Hugo North, Hugo South, Heruga); total M&I 5.4 Mt contained copper (11.9 Blb), 5.9 Moz contained gold; total Inferred 13.6 Mt contained copper (30 Blb), 20.4 Moz contained gold.. The company holds a 66% interest in the project. Royalties and streams: Legal title to Shivee Tolgoi and Javkhlant licences subject to equity participation and earn-in agreement between Entrée LLC and Oyu Tolgoi. Investment Agreement with Government of Mongolia (6 Oct 2009); ARSHA (8 June 2011)..
These figures are extracted from Rio Tinto'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
- Initial capex
- $7.36B
costlier than 98% of 46 projects we track
- Study price assumption
- Mineral Reserve valuations: USc 350.80/lb copper, US$1,496.75/oz gold, US$20.43/oz silver. Mineral Resource valuations: USc 320.30/lb copper, US$1,479.82/oz gold, US$19.23/oz silver, US$9.29/lb molybdenum.
- Spot copper today
- $6.61/lb
The build is almost a rounding error against the balance sheet. At $7.36B, Oyu Tolgoi's initial capex sits below 2% of the 46 copper projects we track, and it lands on a company carrying a US$153.22B market cap with 45 projects in the portfolio. That combination is rare in this dataset: a feasibility-stage copper build, in construction, that the owner can fund without the equity dilution or project-finance scramble that defines most large developments. The funding risk that usually decides these projects is largely absent here.
What remains is execution and jurisdiction. The study is feasibility-level, a build-ready estimate with a plus or minus 15% band, so these numbers deserve more weight than a scoping PEA would. Oyut is already producing and Hugo North is under construction, which removes the permitting and first-mine uncertainty that dogs greenfield peers. But the South Gobi is a higher-risk jurisdiction for a Western investor, and that discount does not disappear because the deposit is good. The capital is not the constraint; delivering the underground on time and on budget, in that location, is.
The price deck is where the caution sits. Reserve valuations use USc 350.80/lb copper, well below today's $6.61/lb spot. That gap cuts both ways: it means the reserve economics were not flattered by a hot price, but it also means the headline returns are not what a spot-price world would show, and the market may be pricing the jurisdiction rather than the metal. The question that decides this project is not whether the copper is there or whether the company can pay for it. It is whether Hugo North comes in on schedule and on budget in the South Gobi.
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.