Arizona Gold & Silver Reports Up To 99% Gold Recovery From Agitation Leach And 84% Gold Recovery From Heap Leach Cyanide Processing Of Bulk Sample From The Philadelphia Project, Arizona

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Vancouver, British Columbia, June 30th, 2026 – TheNewswire – Arizona Gold & Silver Inc. (TSXV: AZS) (OTCQB:AZASF) is pleased to announce gold recovery from both agitation leach and heap leach cyanidation tests completed at Kappes, Cassidy & Associates (KCA) on a bulk sample from the Philadelphia gold-silver project located in Mohave County, Arizona. Results are summarized below with details following. Summary of Results Gold recovery of 91-99% was achieved by agitation leach cyanidation on modest grind sizes of 0.40-0.136mm (40 - 110 mesh).  +50% of total gold recovered in first 10 days of column leaching.  Gold recovery of 84% was achieved by heap leach on bulk material crushed to -6.3mm using HPGR (high pressure grinding rolls) over a 177-day leach cycle, with regression analysis suggesting 86% recovery over 360 days.  Agglomeration and compaction test work demonstrated heap leach material crushed to -6.3 mm was amenable to stacking heights of 10 to +30 meters with 2-4 kilograms/tonne of cement added to the agglomeration process.  Silver recovery of 49-72% was achieved by agitation leach cyanidation on grind sizes of 0.40-0.136mm (40 – 110 mesh), while silver recoveries from bulk material under heap leach was 37%.  Gold recovery using HPGR crushing for heap leach exceeded recovery using conventional third stage crushing by 12%, while silver recovery using HPGR crushing exceeded conventional crushing by only 3%.  The results demonstrate the attraction of treating higher grade material by agitation cyanide leach, where higher silver grades accompany higher gold grades in the deposit, and treating the lower grade material by heap leach processes using HPGR crushing.  Bulk Sampling and Head Grade A bulk sample of 415.5 kilograms was collected from a fresh bench cut at the current surface operation on the property and trucked to the Kappes, Cassiday & Associates by Company personnel under strict chain-of-custody protocols. The target head grade, based on previous channel sampling of the bench cut, was 1.0-1.2 grams per tonne gold.  The results of multiple head assay analyses on the bulk sample returned gold grades of 1.929-1.988 grams per tonne and silver grades of 2.82-3.34 grams per tonne. The higher grades in the bulk sample over those in the original channel samples is typical for the property, where la...

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