Revival Gold Reports Interim Column Leach Results at Mercur

• Eighteen column leach tests were built from eleven metallurgical composites collected during the 2025 field season at the Main and South Mercur zones.
• Oxide material columns averaged 81% gold extraction and 16% silver extraction to date.
• Refractory material columns, containing sulphide and carbon content, averaged 43% gold extraction and 31% silver extraction to date.
• Crush sizes tested ranged from 6.3 millimetres to 37.5 millimetres, with three samples requiring cement agglomeration to meet minimum percolation requirements.
• Column leaching began between May and July 2026 and remains ongoing, with results to be reconciled against tail assays this fall.

Revival Gold Inc. (TSXV: RVG) (OTCQX: RVLGF) is a Canada-based gold mine developer advancing the Mercur Gold Project in Utah and exploration at the Beartrack-Arnett Gold Project in Idaho. The company describes itself as one of the largest pure gold developers operating in the United States, with its corporate office in Toronto and a U.S. development office in Salmon, Idaho.

Interim Column Leach Results Show 81% Average Gold Extraction for Oxide Material, Supporting Heap Leach Viability at Mercur

This year's testing program expands on metallurgical work completed in 2025, which used a single, consistent crush size and did not include cement agglomeration. The 2026 program tests a wider range of conditions across the deposit ahead of the prefeasibility study.

Nine columns built from oxide material returned an average gold extraction of 81%, with individual results ranging up to 94%. Heap leaching involves dissolving gold into a cyanide solution as it passes through crushed ore stacked on a pad; extraction rates measure the proportion of gold recovered through this process. Silver extraction from the same oxide columns averaged 16%.

Testing continues at KCA's laboratory in Reno, Nevada. Revival Gold states that current figures are preliminary and will be reconciled once tail assays from the columns are available following completion of the program this fall.

Expanded Metallurgical Program Tests Crush Size, Cement Agglomeration, and Refractory Material Across 18 Column Tests

Crush size was varied across the eighteen columns, ranging from 6.3 millimetres to 37.5 millimetres. Two columns crushed to 6.25 millimetres and one crushed to 12.7 millimetres did not achieve the minimum percolation required and were agglomerated with 2.0 kilograms per tonne of cement prior to loading, a process used to bind fine material so leach solution can pass through it evenly. This data will inform processing assumptions in the prefeasibility study.

The program also tested refractory material, containing sulphide and carbon content, for the first time at this scale. Nine refractory columns averaged 43% gold extraction and 31% silver extraction, figures the company notes reflect the typically lower leachability of this material type compared to oxide ore.

President & CEO Hugh Agro said:

"Revival Gold's 2026 column leach testing at Mercur is progressing with interim results continuing to support the amenability of material to conventional crushed ore heap leaching."

Results to Inform Prefeasibility Study Targeted for Q1 2027 Completion

The column leach data will be combined with existing cyanide soluble assay data collected across the Mercur deposit to refine recovery and processing assumptions for the prefeasibility study. 

President & CEO Hugh Agro said:

"The data from this year's metallurgical testing program together with extensive available cyanide soluble assay data will help refine recovery and processing assumptions for the PFS targeted for completion by the end of Q1 next year."

Additional metallurgical testing for the prefeasibility study remains ongoing. Technical information in the release was reviewed by John Meyer, P.Eng., Executive Vice President of Engineering and Development for the company.

Milestones and Next Steps

Revival Gold's near-term work includes completing the remaining column leach tests and reconciling tail assay data this fall. These results, together with the crush size and agglomeration data already collected, will feed into the prefeasibility study, which the company has targeted for completion by the end of the first quarter of 2027.

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