Aftermath Silver Ltd. announce that on-going metallurgical test work has successfully produced battery grade manganese sulphate crystals, assaying 32.9% Mn (High-purity manganese sulphate monohydrate or ?HPMSM?) from the second high-Mn drill core composite sample of silver-copper-manganese mineralization from its Berenguela project in Peru. The test work on Aftermath Sample # RD4LOWA (KCA Sample # KCA-99062B) was carried out at Kappes Cassiday and Associates' (KCA) Reno facility and involved only hydrometallurgical processes. No electrowinning was required for purification.

Battery grade manganese sulphate monohydrate is a pale pink inorganic chemical, with the formula MnSO 4. H2 O, in demand as a source of manganese for the battery manufacturing industry. Pure crystals of MnSO 4. H2 O contain approximately 32% manganese and one tonne of manganese metal should theoretically yield approximately 3 tonnes of MnSO4. H2 O. Most MnSO4.

H2 O is produced by reducing the mineralization to metal, then dissolving the metal in acid. The process developed for Berenguela is simpler and less energy intensive - the mineralization is directly processed with acid to dissolve the manganese and other metals. The solution is purified, then the manganese sulfate is directly crystallized.

China currently accounts for roughly 90% of global high purity MnSO4. H2 O production so potential new sources of sulphate outside of China are becoming strategically and commercially important. Sixteen composite samples weighing over 6 tonnes in total were selected from Aftermath's metallurgical drilling program and delivered to KCA's laboratory in Reno.

The composites represent the key geometallurgical domains which cover all mineralization types encountered and form the basis of the current metallurgical processing campaign. Test work is being performed individually or on blends of the samples. The objective of the current program, which complements and partly repeats the historic metallurgical test work, is to refine the flowsheet routes and to outline approximate plant costs for a planned preliminary economic analysis (?PEA?).

The work includes: crushing and splitting; pressure filtration tests; creation of a standard solution for subsequent processing steps; removal of iron from primary leach solution; leach tests to determine the conditions (oxidation, cyanide level & consumption, leach time) for optimum silver recovery; sulphide precipitation and recovery of zinc; characterization of purified solution to identify other trace impurities and remove them if necessary; MnSO4 crystallization processes and preparation of MnSO4 to send to outside groups for evaluation. Berenguela Resource Estimate In March 2023, Aftermath published an updated resource estimate for Berenguela which included manganese in addition to substantial silver and copper resources across the Measured, Indicated and Inferred categories. Mineral Resources are stated at a cut-off grade of 80 g/t silver equivalent.

The relative value in the Mineral Resource by metal is as follows, Ag=26%, Mn=44%, Cu=26%, Zn=4%, however the estimate used pricing for agricultural grade MnSO4 which trades at a considerable discount to battery grade manganese sulphate. The model is depleted for historical mining activities.