HIGHLIGHTS
– Successfully completed reverse circulation drilling at the S-Bend, with 452 drill holes completed for 3,361 m
– The S-Bend project is located within the exclusive prospecting license 3497 and is adjacent to the flagship Tumas Project on Mining License 237
– Drilling of identified mineralization with thicknesses up to 8 m from surface, with the best intersections including:
o SB0247: 8 m at 332 ppm eU3O8 from 1 m
o SB0560: 2 m at 1,217 ppm eU3O8 from surface
o SB0147: 5 m at 407 ppm eU3O8 from 1 m
o SB0156: 5 m at 367 ppm eU3O8 from 1 m
o SB0282: 4 m at 378 ppm eU3O8 from 1 m
– Higher grade mineralization identified at the S-Bend project has been isolated in four main clusters, with further detailed drilling required to delineate a resource base associated with these clusters
– Importantly, the potential to expand the Tumas resource beyond the current 30-year Life of Mine is further enhanced by discoveries such as the S-Bend prospect
The shallow tributaries occurring in this area are collectively referred to as the S-Bend prospect. This Prospect has undergone limited drilling testing at several locations in recent years, which revealed the presence of shallow, low-grade mineralization and was deemed worthy of follow-up drilling to test the continuity of the uranium presence.
The Reverse Circulation (RC) follow-up exercise program at the S-Bend prospect began on July 9, 2025 and was completed on September 22, 2025.
A total of 452 holes were completed over a length of 361 m (see Figure 2* and Appendix 1, Table 1*).
Approximately one third of the drilled holes had a mineralization degree of more than 100 ppm eU3O8 over a minimum thickness of one meter (see appendix 1, table 2*).
Drill hole and line spacings varied across the prospect, ranging from 50 m by 50 m in areas of previously identified mineralization to 500 m by 200 m spacing in the unexplored zones.
Results
The S-Bend project consists of a series of shallow tributaries that flow into the main Tumas paleochannel. The Tertiary valley fill at the S-Bend is relatively thin, generally only a few meters thick. Superficial uranium mineralization occurred not only in the Tertiary sediments, but also in the underlying fractured and/or layered Proterozoic rocks. The rock consists mainly of shale and gneiss of the Tinkas Formation, associated with granodioritic intrusions.
Mineralization is distributed in almost equal proportions between the Tertiary cover sediments and the underlying rock. The mineralization is shallow, in some cases starting from the surface, with a maximum thickness of up to 8 m. The average mineralized thickness is about 2 m, with an average content of 196 ppm eU3O8. The best intersections (see appendix 1, table 2*) from the program included:
– SB0247: 8 m at 332 ppm eU3O8 from 1 m
– SB0560: 2 m at 1,217 ppm eU3O8 from surface
– SB0147: 5 m at 407 ppm eU3O8 from 1 m
– SB0156: 5 m at 367 ppm eU3O8 from 1 m
– SB0282: 4 m at 378 ppm eU3O8 from 1 m
The equivalent uranium values (eU3O8) are determined from downhole radiometric gamma logging performed by trained Deep Yellow personnel using a fully calibrated AusLog gamma logging system.
Conclusions
As shown in the cross-section of Figure 3*, this drilling campaign tested approximately 4km of prospective tributaries in the SBend prospect area, isolating the high-grade mineralization into four main clusters, as shown in Figure 2*. Detailed drilling in these areas will be required to delineate a resource base associated with these clusters, and will help expand the current ore reserves already identified for the Tumas project in adjacent ML237.
The potential to add to the current resource base at Tumas and extend beyond the currently stated 30-year lifespan of this project is further enhanced with discoveries such as those identified at the S-Bend project.
*To view tables and figures, go to:
https://abnnewswire.net/lnk/Z9651BJW
About Deep Yellow Limited:
Deep Yellow Limited (ASX:DYL) (OTCMKTS:DYLLF) is successfully developing a dual-pillar growth strategy to create a global diversified Tier-1 uranium company producing 10+Mlb per year
The company’s portfolio contains the largest uranium base of any ASX-listed company and its projects offer geographic and development diversity. Deep Yellow is the only ASX company with two advanced projects: flagship Tumas, Namibia (final investment decision expected in H1 24) and MRP, Western Australia (progressing through revised DFS), both located in Tier-1 uranium jurisdictions.
Deep Yellow is well positioned for further growth through the development of its highly prospective exploration portfolio – ARP, Northern Territory and Omahola, Namibia, with continued mergers and acquisitions focused on high-quality assets, should opportunities arise that best suit the company’s strategy.
Led by a best-in-class team of proven uranium mine builders and operators, the company is advancing its growth strategy at a time when the medium- to long-term need for nuclear power is becoming the only viable option to deliver baseload power and achieve zero-emission targets.
Importantly, Deep Yellow is on track to become a reliable, long-term uranium producer, able to offer production optionality, security of supply and geographic diversity.
Source:
Deep yellow limited
Contact:
Johannes Borshoff
Director/CEO
T: +61-8-9286-6999
E: john.borshoff@deepgold.com.au
W: www.deepgold.com.au
Media:
Cameron Gilenko
T: +61-466-984-953
e: cgilenko@citadelmagnus.com
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