Announcement • Jan 06

Aton Mining Inc. Reports New Results from Metallurgical Testing on Abu Marawat Oxide Mineralisation

Aton Mining Inc. update investors on the results of metallurgical testwork from its Abu Marawat deposit ("Abu Marawat"). Abu Marawat is located within the Company's 100% owned Abu Marawat Concession ("the Concession"), in the Eastern Desert of Egypt. Highlights: Nine composite samples representing the main mineralisation types at Abu Marawat underwent preliminary metallurgical testwork investigating several different process options. The composite samples were prepared from selected diamond drill core intervals and RC chips; The samples exhibit medium to hard grinding characteristics, with Bond Rod and Ball Mill Work Indices ranging from 12.8-17.1 kWh/t. Abrasion Indices indicate slightly to moderately abrasive behaviour. Sulphide composite AM-MET03 exhibits hard crushing characteristics, while oxide samples are classified as medium; Whole ore cyanide leaching resulted in gold extractions ranging from 69.8% to 90.7%, and silver extractions between 48.3% and 88.4%. Cyanide consumption (3.2-9.2 kg/t) and lime consumption (0.6-12.0 kg/t) varied by ore type. Sulphide and transitional samples generally achieved the highest extraction efficiencies. Overall, the testwork demonstrated that gold is largely amenable to cyanide leaching, with silver recovery being more variable; Copper rougher flotation achieved 67-92% copper recovery with concentrate grades of 4-19% Cu, depending on mineralisation type. Gold recovery in copper concentrates ranged from 40-75%, and silver from 56-80%. Several samples (e.g. Fin Vein transitional and CVZ oxide) produced high grade copper concentrates with significant precious metal enrichment; Cleaner stages produced high grade copper concentrates (up to 45% Cu), but at the cost of significant recovery losses (often 10-40% Cu recovery in the cleaners). The PLS is then processed in a SART circuit to produce a saleable metal sulphide concentrate, and to recycle and regenerate the cyanide. The SART tails can then be processed through a Merrill-Crowe circuit to recover the remaining gold and silver in solution to produce dore. It was not possible to produce separate saleable copper and zinc concentrates from the CVZ and Fin Vein transitional mineralisation types. The preferred process option for the transitional or types is material will be to produce and sell a zinc concentrate with copper, gold and silver credits, which could alternatively be sold as a precious metals concentrate. The preferred process option for processing the Abu Marawat CVZ sulphide mineralisation is by sequential flotation to produce separate saleable Copper and zinc concentrates with precious metal credits.

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Aton Mining Inc. Reports New Results from Metallurgical Testing on Abu Marawat Oxide Mineralisation

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