Deep Yellow Limited has reported successful results from a major reverse circulation (RC) drilling program at the S-Bend prospect, located within Exclusive Prospecting Licence (EPL) 3497, immediately adjacent to the company’s flagship Tumas Uranium Project on Mining Licence 237 in Namibia’s Erongo Region.
The campaign, which ran from 9 July to 22 September 2025, saw the completion of 452 drill holes for 3,361 metres, marking another milestone in Deep Yellow’s aggressive exploration drive to expand the Tumas resource base.
According to the company, approximately one-third of all drill holes intersected mineralisation greater than 100 parts per million (ppm) eU₃O₈ over a minimum of one metre. Notable intersections include SB0247, which returned 8 metres at 332 ppm eU₃O₈ from 1 metre; SB0560, with 2 metres at 1,217 ppm eU₃O₈ from surface; SB0147, which intersected 5 metres at 407 ppm eU₃O₈ from 1 metre; SB0156, which recorded 5 metres at 367 ppm eU₃O₈ from 1 metre; and SB0282, which returned 4 metres at 378 ppm eU₃O₈ from 1 metre.
The S-Bend prospect covers a series of shallow tributaries feeding into the main Tumas palaeochannel, an ancient valley known to host significant uranium mineralisation. The mineralised zones are hosted both within the thin Tertiary sediments and in the underlying fractured Proterozoic bedrock, composed primarily of schists and gneisses of the Tinkas Formation.
Mineralisation is typically shallow—beginning in some cases at the surface—and extends to a maximum thickness of 8 metres with an average grade of 196 ppm eU₃O₈. Downhole gamma logging was conducted by Deep Yellow’s trained personnel using a fully calibrated AusLog system to determine equivalent uranium grades.
Notably, the company identified four key clusters of higher-grade mineralisation across the S-Bend prospect. These zones are expected to undergo more detailed follow-up drilling to confirm continuity and define a potential new resource.
Deep Yellow said the S-Bend discovery significantly strengthens the potential for resource expansion and could extend the Tumas Project’s current 30-year mine life. With the Tumas Project already positioned as one of the world’s most advanced new uranium developments, extensions such as S-Bend are seen as critical to future production longevity and economic scale.
The company described the results as further evidence of the untapped uranium potential within Namibia’s Erongo region, where its multi-channel exploration strategy continues to identify near-surface, high-value deposits capable of feeding long-term operations at Tumas.
