Deep Yellow Limited announced a significant and impressive Mineral Resource Estimate (MRE) upgrade for the Tumas 3 deposit, located in EPL3496 in Namibia. The deposit is held by Deep Yellow through its wholly owned subsidiary Reptile Uranium Namibia (Pty) Ltd. (RUN). In June 2021, the Company completed a 4-month, 911hole (17,679m) infill RC drilling program covering the Tumas 3 deposit. The targeted area contained 28.4Mlb of Indicated Mineral Resources grading 299ppm and 21.4Mlb of Inferred Mineral Resources grading 244ppm eU3O8 using a 100ppm cut off. The primary goal of the DFS resource upgrade drilling program at Tumas 3 was twofold: i. Focus on converting the remaining Inferred Mineral Resources at Tumas 3 (21.4Mlb) to Indicated Mineral Resources status; and ii. Test the immediate peripheral zones to properly close off Tumas 3. Pleasingly, the drilling program at Tumas 3 has successfully converted 117% of the Inferred Mineral Resources (by metal on a panel-by-panel basis) available within the area to an Indicated Mineral Resources category. The program also successfully identified an additional 5.7Mlb Indicated and 5Mlb Inferred Mineral Resources. The total increase in Indicated Mineral Resources represents 124% of the existing Inferred Mineral Resources at Tumas 3, thereby adding considerable value to the Tumas Project. Overall, at a 100ppm eU3O8 cut off, the Tumas 3 MRE has delivered increased Indicated Mineral Resources that now stand at 54.9Mlb grading 320ppm, with an additional Inferred Mineral Resource delineated in this area of 5.0Mlb at 220ppm eU3O8, totalling 59.9Mlb at 308ppm eU3O8. This is a notable improvement in both the quality and amount from the Indicated and Inferred Mineral Resource of 49.8Mlb (previously announced in the Tumas Pre-Feasibility Study on 10 February 2021) to 59.9Mlb eU3O8, with 92% of the overall Tumas 3 MRE now in the Indicated Mineral Resource category. The MRE was undertaken using various cut-off grades using a minimum thickness of 1m and conforms to the 2012 JORC Code of Mineral Resources Reporting. These confirmed resource increases from Tumas 3, along with the yet to be incorporated MRE that will result from the Tumas 1E resource upgrade drilling currently being undertaken, are considered more than sufficient to support the Company's objective of achieving a minimum 20-year Life of Mine (LOM) for the Tumas Definitive Feasibility Study (DFS). This is underway and progressing as planned.