Silver One Resources Inc. announced additional positive metallurgical test results from six core hole samples and three in-pit surface bulk samples from its Candelaria Project located in western Nevada, USA.  The results include column cyanide-leach tests on oxide, mixed oxide and sulphide ("mixed") and sulphide samples, as well as separate flotation tests on two sulphide-rich samples, being conducted by Kappes, Cassiday & Associates ("KCA") in Reno, Nevada.  The column leach tests on the core samples continue in progress with final results expected during the second half of 2023. Silver and gold recoveries or extractions average 57.2% and 31.5% respectively, for column cyanide leach tests on oxides and mixed oxide-sulphide mineralization core samples, utilizing material crushed to 1" with conventional cone crushing.

These recoveries increase to 65.6% silver and 35.2% gold, for the same oxide and mixed mineralization samples when crushed to 1.7mm with HPGR. Silver recoveries from the oxide and mixed core samples continue to increase during the period tested. Column cyanide leach recoveries from sulphides average 47.2% silver and 0.3% gold, utilizing material crushed to 1" with conventional cone crushing.

Cyanide leach recoveries from sulphides increase to 59.3% silver and 1% gold with 1.7mm HPGR crushing. Sulphides, however, are better recovered by flotation where lead and zinc can also be recovered. Flotation extractions average 62% silver, 72% gold, 50% lead and 37% zinc. The sulphide results above are improved by leaching the flotation tails.

Flotation followed by cyanidation of the tails increases the extractions to a range between 71% to 84% silver (average 77.5%) and 75% to 89% gold (average 82%). Sulphides in Candelaria are at this time only a small percentage of the deposit but are expected to increase as drilling continues at depth. Silver recoveries from oxide and mixed core samples reported to date exceed the historic recoveries of 51% reported during the open-pit, heap-leach life of the mine.

Column leach test recoveries from the three surface bulk samples are: 30% to 40% silver and 48% to 63% gold for mixed material crushed to 1.7 mm with HPGR. 48% silver and 76% gold for oxide material crushed to 1.7 mm with HPGR. Silver recoveries from bulk samples are lower than anticipated due to the abundance of clays in the material tested, which is not representative of the overall in-ground mineralization.