Vancouver, BC, May 21, 2019 – Silver One Resources Inc. (TSXV: SVE; OTC Pink: SLVRF; FSE: BRK1 – “Silver One” or the “Company”) is pleased to provide an update of its metallurgical testing on the historic leach pads at its Candelaria project in Nevada. New results show that up to 75% of the total silver contained in composite samples from the old leach-pads (an increase of more than 47%-79% over historic production recoveries) can potentially be recovered by reprocessing the heaps using very fine grinding in combination with microbubble technology. This testing was done at First Majestic Silver Corp.’s La Parrilla Mine laboratory in Durango, Mexico. Metallurgical work continues with ongoing efforts being focused on evaluating the economics of recovering gold and silver by either high-pressure grinding roll (“HPGR”) or by very fine milling combined with microbubble technology.