Deep Yellow advanced exploration at Omahola, S-Bend and Tinkas during the 2026 financial year as the uranium developer continued building a pipeline of potential resources around its flagship Tumas project in Namibia.
The company’s 2026 annual report shows exploration remained active across its wider Namibian portfolio while Tumas moved towards a final investment decision targeted for the fourth quarter of this year.
At S-Bend, Deep Yellow completed 452 reverse circulation holes totalling 3,361 metres between July and September 2025, identifying four clusters of higher-grade uranium mineralisation.
The company said the clusters warrant follow-up drilling and could help expand the Tumas mineral resource and extend the planned mine life.
Deep Yellow followed the drilling with a ground radiometric survey that started in April 2026 to define the mineralised trends better and identify targets for further drilling.
Exploration also continued at Tinkas, where the company drilled 133 reverse circulation holes totalling 1,363 metres.
Uranium mineralisation was identified within calcretised palaeochannel sediments and in joints and fractures within the underlying basement rocks.
Deep Yellow said further infill drilling may be required to establish a mineral resource at Tinkas, potentially adding another resource to the wider Tumas area.
At Omahola, the company tested a previously undrilled seven-kilometre section of the Tumas palaeochannel on EPL3496 during October and November 2025.
A total of 39 holes covering 1,801 metres confirmed the presence of the palaeochannel and favourable sedimentary fill.
The work extends Deep Yellow’s exploration of the geological system associated with Tumas into its Omahola ground, which already hosts a substantial uranium resource.
Omahola contains 125.4 million pounds of U3O8 across the Ongolo, MS7 and Inca deposits and remains Deep Yellow’s largest defined Namibian uranium resource outside Tumas.
The company says significant parts of the prospective ground within Omahola remain underexplored, providing scope for further exploration alongside the existing deposits.
The three areas form part of Deep Yellow’s broader effort to identify additional uranium resources while progressing Tumas towards development.
Tumas currently contains a mineral resource of 118.2 million pounds of U3O8 and an ore reserve of 79.5 million pounds.
The planned mine is designed to produce about 3.6 million pounds of uranium oxide annually, with Deep Yellow targeting a final investment decision in the fourth quarter of 2026, subject to market conditions.
