Deep Yellow Limited announced an updated Mineral Resource Estimate for the Tumas 1 East deposit, on EPL3497 in Namibia. The deposit is held by Deep Yellow through its wholly owned subsidiary Reptile Uranium Namibia (Pty) Ltd. In August 2021, Deep Yellow successfully completed a two-month, 556 hole, 6,982m resource upgrade infill RC drilling program at the Tumas 1E deposit. The mineralisation at Tumas 1E occurs as an eastward extension of the Tumas 1 deposit. The updated MRE at Tumas 1E has delivered at a 100ppm cut off, a maiden Indicated Mineral Resource of 19.6Mlb eU3O8 at 245ppm. In addition, an Inferred Mineral Resource of 9.2Mlb eU3O8 at 216ppm remains within the Tumas 1E deposit to be upgraded at a future date. Overall, at a 100 ppm eU3O8 cut off, the Tumas 1E MRE now stands at 28.8Mlb at 235ppm. Pleasingly, the program was very successful and of the portion of the deposit tested, achieved a 102% conversion of Inferred Mineral Resources (by metal on a panel-by-panel basis) to an Indicated Mineral Resource category. This conversion rate, along with the previous 113% at the Tumas 3 deposit, again shows the value of the company's Mineral Resource improvement strategy. The significant increase announced at both Tumas 1E and Tumas 3 are considered sufficient to support the key objective of the Tumas Definitive Feasibility Study (DFS) to achieve a minimum 20-year Life of Mine. For the PFS, the Indicated Mineral Resources available using a 100ppm cut-off were 28.4Mlb at 299ppm U3O8 from Tumas 3 and 24.2Mlb at 203ppm U3O8 from Tumas 1 and Tumas 2. This established the maiden Ore Reserve for the PFS, outlined below, providing Probable Ore Reserves of 31Mlb at 344ppm U3O8 using a 150ppm cut-off grade.