Highlights

  • Deep Yellow (ASX:DYL) awarded approximately A$34 million of civil and concrete contracts for the Tumas uranium project in Namibia.
  • The contracts were awarded to Namibia Construction and Nexus Building and Civils Contractors following a competitive tender process.
  • Tumas has a definitive feasibility study-backed ore reserve of 79.5 million pounds of U3O8 and an estimated mine life of around 30 years.
  • A final Investment decision for Tumas is targeted for the fourth quarter of 2026, with construction activities progressing ahead of the decision.

For much of the uranium cycle, Deep Yellow (ASX:DYL) has been defined by patience, progressing development work while waiting for market conditions to support a construction decision. That approach moved closer to execution in July 2026, when the company awarded two Namibian construction firms a combined A$34 million in civil and concrete contracts for its Tumas uranium project in Namibia. The contracts mark a transition from engineering and planning toward physical project activity, while a final investment decision remains targeted for the fourth quarter of 2026.

Latest Development

Deep Yellow awarded two construction contracts worth approximately N$393 million in local currency to Namibia Construction Pty Ltd and Nexus Building and Civils Contractors Pty Ltd. Both contractors are wholly Namibian-owned and were selected through a competitive tender process.

Namibia Construction received the larger A$18.5 million package, covering reinforced concrete works for beneficiation facilities, leach-feed thickening and tailings-transfer infrastructure, precast plant elements and a reinforced-earth retaining wall for the run-of-mine stockpile. Nexus received the A$15.5 million package, covering foundations, plinths, slabs and embedded infrastructure across other plant areas.

Mobilisation commenced in August 2026, with work packages scheduled progressively across a 24-month construction period once the project receives formal approval to proceed. Deep Yellow also highlighted the involvement of Namibian labour and contractors as part of the project's local economic contribution.

What the Numbers Show

Tumas is supported by a definitive feasibility study rather than being an early-stage exploration concept. The project has an ore reserve of 79.5 million pounds of U3O8 at 298 parts per million, supporting an estimated mine life of around 30 years and a total resource base of approximately 137 million pounds.

The definitive feasibility study estimated initial Capital Expenditure of about US$372 million, with life-of-mine all-in sustaining costs of approximately US$38.72 per pound and steady-state production of around 3.6 million pounds per year. Uranium prices have moved above the assumptions used in earlier studies, with spot prices around US$85.70 per pound in early June 2026.

Deep Yellow ended the June quarter with approximately A$160 million in cash. Engineering completion had reached 79 per cent, the integrated 3D model was 81 per cent complete and major process plant equipment was 76 per cent tendered.

Why It Matters

Awarding civil and concrete contracts before a final investment decision is a deliberate project sequencing approach. It allows Deep Yellow to progress schedule-critical work packages, improve contractor availability and reduce execution uncertainty ahead of the board decision.

For a company that has previously delayed Tumas development timing, the contracts provide evidence of movement toward construction readiness. The project also aligns with broader efforts to increase uranium Supply outside established producing regions. A long-life uranium operation in Namibia would add another potential source of primary supply in a market where utilities continue to seek long-term supply arrangements.

Growth Catalysts

The main upcoming catalyst is the Tumas final investment decision, targeted for the fourth quarter of 2026. Management has indicated the decision will depend on technical optimisation, commercial conditions and execution readiness.

Beyond Tumas, Deep Yellow continues to develop a broader uranium portfolio. The Mulga Rock project in Western Australia is undergoing trade-off studies focused on improving project Economics and simplifying the processing flowsheet. Exploration activities are also progressing, including radiometric surveys at the S-Bend prospect and drilling at the Alligator River project in the Northern Territory.

The company has also entered an agreement to acquire Energy Resources of Australia's interest in the Cooper Creek joint venture, increasing its exposure to the Alligator River region. These projects support Deep Yellow's longer-term ambition of becoming a multi-asset uranium producer.

Risks Investors Should Watch

The key risk remains the final investment decision, which is still dependent on market conditions. Deep Yellow previously deferred the decision while uranium prices were considered insufficient to support development, and the recent contracts do not remove the requirement for board approval.

Construction cost Inflation remains another consideration. The US$372 million capital estimate comes from the definitive feasibility study period, and updated costs at sanction could be higher. Full project funding is also not yet finalised, creating potential requirements for Debt Financing or additional equity.

Tumas is a large-scale project but has relatively low uranium grades, meaning project economics remain sensitive to uranium prices, operating performance and cost control during construction and production.

What Happens Next

The next major milestone is the Tumas final investment decision expected before the end of 2026. Before then, investors will monitor progress on construction preparation, engineering completion, equipment procurement and any financing announcements.

A final capital estimate at sanction will also be important, as it will provide greater clarity on project funding requirements. Beyond Tumas, updates from Mulga Rock and exploration programs will provide additional information on Deep Yellow's broader development pipeline.

Conclusion

Deep Yellow (ASX:DYL) has moved Tumas closer to construction by awarding civil and concrete contracts while continuing toward a targeted fourth-quarter 2026 investment decision. The project has an established resource base, completed feasibility work, available cash and a defined construction pathway. However, the final approval, funding structure and updated capital requirements remain important steps before development is fully committed. The recent contract awards demonstrate progress, but the next phase will depend on whether Deep Yellow can convert preparation work into an approved and financed uranium project.