Mr. Hugh Agro reports

PROMISING OUTCOME FROM COLLABORATION WITH DUNDEE SUSTAINABLE TECHNOLOGIES

Revival Gold Inc. has released promising results from a program of metallurgical testing undertaken in collaboration with Dundee Sustainable Technologies (DST), a subsidiary of Dundee Corp., to evaluate the effectiveness of DST's Glasslock process on a high-grade sample from the Joss deposit at the company's Beartrack-Arnett gold project located in Idaho, United States.

Highlights

• GlassLock process testing on high-grade underground sulphide material at Beartrack-Arnett boosted the concentrate gold grade 31 per cent and cut the arsenic content by 99 per cent with almost no loss in gold;
• Dundee Sustainable's GlassLock process has been successfully tested globally and used at an industrial scale at the Tsumeb smelter facility in Namibia;
• 3,900-metre core drilling program will be kicked off later this year to continue to test and expand on the high-grade underground potential at Beartrack-Arnett.

The DST work was undertaken subsequent to Dundee Corp.'s purchase of a strategic stake in Revival Gold (see Revival Gold news release dated Feb. 19, 2025) and followed up a previously reported flotation testing program on a 4.6 grams per tonne gold composite from the Joss deposit that yielded a flotation concentrate grading 50 g/t gold, 23 per cent sulphide sulphur and 13.5 per cent arsenic (see Revival Gold news release dated Sept. 6, 2023). DST developed a similar arsenopyrite-rich concentrate from Joss samples (50.3 g/t gold, 23.6 per cent sulphide sulphur, 13.7 per cent arsenic) and following their GlassLock process the concentrate graded 66.1 g/t gold (a 31-per-cent increase), 17.9 per cent sulphide sulphur (a 24-per-cent reduction) and 0.19 per cent arsenic (a 99-per-cent reduction). No measurable gold was lost during the GlassLock process. The primary byproduct from the GlassLock process is a stable, insoluble, arsenic-rich glass characterized as non-toxic using Environmental Protection Agency's Method 1311 toxicity characteristic leaching procedure.

"DST's Glasslock process offers Revival Gold the opportunity to produce a direct-to-smelter saleable gold concentrate from a potential second phase underground sulphide operation following the planned open pit heap leach phase at Beartrack-Arnett," said Hugh Agro, Revival Gold president and chief executive officer. "A 3,900-metre exploration drilling program will be initiated later this year as we continue to test and expand Beartrack-Arnett's high-grade underground potential," added Mr. Agro.

"One of the key attractions for Dundee Corp. in getting involved with Revival Gold earlier this year was the potential for our subsidiary business, DST, to help unlock additional value from Revival Gold's high-grade sulphide material," observed Jonathan Goodman, president and chief executive officer, Dundee Corp. "DST is expected to play a big role in the future of gold processing with GlassLock already having been successfully tested on projects in Canada, the United States and Africa, and implemented on an industrial-scale to stabilize arsenic-bearing feed materials at Dundee Precious Metal Inc.'s Tsumeb smelter facility in Namibia," added Mr. Goodman.

Results from Revival Gold's DST metallurgical testing will be presented by the company's, vice president, engineering and development, John Meyer, at the upcoming Nevada Mineral Processors Division annual meeting taking place Aug. 20 to Aug. 22, 2025, in Reno, Nev.

Qualified person

Technical information included in this news release was reviewed and approved by John Meyer, PEng, a QP and vice-president, engineering and development, for the company.

About Dundee Corp.

Dundee is a public Canadian independent holding company, listed on the Toronto Stock Exchange under the symbol DC.A. Through its operating subsidiaries, including Dundee Sustainable Technologies, Dundee Corp. is an active investor focused on delivering long-term, sustainable value as a trusted partner in the mining sector with more than 30 years of experience making accretive mining investments.

About Revival Gold Inc.

Revival Gold is one of the largest, pure gold mine developers in the United States. The company is advancing development of the Mercur gold project in Utah, and mine permitting preparations and continuing exploration at the Beartrack-Arnett gold project located in Idaho. Revival Gold is listed on the TSX Venture Exchange under the ticker symbol RVG and trades on the OTCQX Market under the ticker symbol RVLGF. The company is headquartered in Toronto, Canada, with its exploration and development office located in Salmon, Idaho.

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