EnviroGold Global Limited announced that test work completed to date on its proprietary flowsheet demonstrated gold recovery rates of 83.5% and silver recovery rates of 94.6% from the refractory, volcanogenic massive sulphide tailings at its Hellyer Tailings Reprocessing Project. The gold recovery rate achieved is an additional 24% absolute increase over previously announced results and was obtained through a flowsheet optimization program designed to enhance project economics. The flowsheet optimization program was undertaken in collaboration with Core Resources Pty Ltd. In addition to enhancing the Company's intellectual property portfolio, the results of the flowsheet optimization program indicate substantial upside potential for EnviroGold Global's Hellyer Tailings Reprocessing Project and create further significant upside potential for the Company's global tailings reprocessing portfolio, which includes several additional VMS tailings projects in other jurisdictions.

EnviroGold Global's Hellyer Tailings Reprocessing Project began in August of 2020 when Hellyer Gold Mines Pty Ltd. engaged the Company to assess the feasibility of recovering precious metals, clean energy, and battery metals from the mine tailings located within HGM's permitted tailings storage facility. The Hellyer Tailings were produced from a VMS deposit with a complex mineralogical matrix that is resistant to conventional metal recovery techniques. Significant quantities of gold, silver and other critical and strategic metals were discharged into the tailings storage facility over the course of the primary and secondary processing activities.

Extensive petrological investigation, including mineral liberation analysis scans and laser ablation studies of the refractory tailings samples containing up to 55% of pyrite and arsenopyrite, indicated that the occluded gold is sub-microscopic and is locked within the crystal structure of the sulphide minerals. EnviroGold Global's proprietary extraction flowsheet, developed under the direction of EnviroGold Global's technical team at Core Resources' metallurgical facility in Brisbane, involves sulphide dissolution followed by agitated leaching of the remaining insoluble residue. In September 2021, EnviroGold Global announced its proprietary extraction flowsheet attained precious metal recovery rates of 59% for gold and 90% for silver from HGM's zinc scavenger tailings, paving the way for the Company to extract substantial value from tailings recoveries.

The zinc scavenger tailings produced by HGM's operations will comprise the initial plant feed for EnviroGold Global. The Hellyer Tailings have a 2020 JORC historical mineral resource estimate of 634k oz Gold, 22.9M oz Silver and 419k tonnes Copper-Lead-Zinc with grades of 2.60 g/t Au, 94 g/t Ag, 2.33% Zn, 3.01% Pb and 0.19% Cu Contained in 6.37Mt of Measured & Indicated and 1.21Mt of Inferred Resources. Please refer to the additional technical information and cautionary statements on the Hellyer Tailings' historical estimate below Subsequent to the recovery breakthrough announced in September of 2021, EnviroGold Global's technical team directed a flowsheet optimization program undertaken at Core Resource's Brisbane facilities during Fourth Quarter 2021 and First Quarter 2022 with an aim to significantly increase tailings reprocessing economic potential through enhanced recovery of gold and silver.

Results reported by Core Resources demonstrated improved recovery rates of 83.5% for gold and 94.6% for silver. EnviroGold Global expects the mineral processing methodologies developed in the flowsheet optimization program will drive significant increases in the Company's economic expectations for the Hellyer Tailings Reprocessing Project.