Uranium Mining, Producers and Stocks

The largest uranium producing countries

Kazakhstan is by far the largest uranium producer. In 2024 it mined about 39% of the world’s uranium, ahead of Canada, Namibia and Australia, according to the World Nuclear Association, whose production table runs to 2024.

Figures are tonnes of uranium metal. One tonne of U equals about 1.18 tonnes of U3O8, the oxide usually quoted in prices and company reports.

Where uranium comes from

Uranium is mined from a handful of deposit types, and the type largely decides the mining method and cost:

• Sandstone deposits, where uranium was carried by groundwater and trapped at a chemical front. These are mined by in-situ leaching in Kazakhstan, Uzbekistan, Wyoming and Texas.
• Unconformity deposits, found where old sandstone sits on much older basement rock. Canada’s Athabasca Basin hosts the highest-grade uranium mines in the world.
• Breccia complexes such as Olympic Dam in South Australia, where uranium is recovered alongside copper and gold.
• Intrusive and surficial deposits, including Namibia’s large, low-grade open pits.

Seawater also contains uranium, but at a few parts per billion. Researchers have shown it can be extracted with adsorbent materials, at a cost still far above conventional mining; the seawater article in this guide looks at the numbers.

The World Nuclear Association puts in-situ leach at 55% of world production in 2024, conventional underground and open pit mining at about 40% and by-product recovery at about 5%. In-situ leaching pumps a solution through the ore body and recovers the dissolved uranium at the surface, with no pit or waste dump; our article on in-situ leaching versus conventional mining compares them.

The main uranium miners

A small number of uranium mining companies supply most of the world’s output. The largest include Kazakhstan’s state-owned Kazatomprom, Cameco of Canada, France’s Orano, Chinese state groups, Uranium One (part of Russia’s Rosatom), Uzbekistan’s state producer, and BHP through Olympic Dam. Many of the biggest mines are joint ventures between them.

Among Canadian uranium producers, Cameco is the main one, operating McArthur River and Cigar Lake in Saskatchewan. Several other Canadian-listed companies, including NexGen Energy and Denison Mines, are advancing Athabasca projects toward production, and many more are explorers. Our largest uranium producers by country and company and uranium stocks list sort them by stage.

The United States mines only a small amount of uranium today, mostly from in-situ leach operations in Wyoming and Texas, and imports most of what its reactors use. The article on active uranium mines in the US, listed in this guide, explains why output fell and which projects are restarting.

How uranium is priced

People asking how much uranium is worth usually mean the spot price, quoted in US dollars per pound of U3O8 by price reporters such as UxC and TradeTech. Most uranium, though, is sold to nuclear utilities under long-term contracts, at prices that move more slowly than spot. Because utilities buy years ahead, a change in reactor plans or a supply disruption at one large mine can move the spot market sharply. Mined uranium is only the first step in the fuel cycle. The U3O8 concentrate, often called yellowcake, is converted to uranium hexafluoride, enriched to raise the share of the U-235 isotope, and then made into fuel assemblies. Utilities usually buy each step separately, so a shortage of conversion or enrichment capacity can affect the market as much as a mine outage. We don’t quote prices here because they change constantly; our article on the uranium spot price per pound gives dated figures and what drives them.

How analysts compare uranium mining companies

This is general information, not investment advice. Analysts usually start by sorting companies into producers, developers and explorers, because each carries different risks. Then come the questions:

1. Is there a mineral resource reported under NI 43-101, JORC or a similar code, and what grade and depth is it?
2. Which mining method will it use, and does the project have its permits and licenses?
3. How stable is the jurisdiction for uranium mining and export?
4. For producers, how much output is already sold under contract, and at what cost per pound?
5. For developers and explorers, how much cash is left, and how often have they raised money by issuing new shares?

Warning signs of a risky uranium mining stock include no published resource, heavy promotion, a recent switch into uranium from an unrelated business, and frequent share issues. At the very start of a project, satellite screening can help an explorer decide where to sample. Uranium is one of the 23 minerals clients have paid us to analyze, and our gold, silver and uranium case study from Zimbabwe shows how satellite mineral detection ranks Exploration Targets ahead of a JORC or NI 43-101 estimate.