Inventus hits 75% gold recovery from heap leach at Pardo

TORONTO, Aug. 06, 2026 (GLOBE NEWSWIRE) -- Inventus Mining Corp. (TSXV: IVS) ("Inventus" or the "Company") is pleased to report positive metallurgical heap leach test results completed on material from the Company's 100%-owned Pardo "River of Gold" Project, located 65 km northeast of Sudbury, Ontario.

The program evaluated gold recovery across multiple crush sizes and leach durations and provides a technical basis for detailed testing and potential integration as a future processing strategy.

HIGHLIGHTS

Column leach recoveries ranged from 66.9% to 74.5% after 78 days at crush sizes of -1/2 inch, -3/8 inch and -1/4 inch

The -1/4 inch column recovered 64.3% in 27 days, 72.0% in 48 days, and 74.5% after 78 days, identifying an initial 27-to-48-day optimization window for further testing

The -1/4 inch had a favourable reagent profile with low total cyanide consumption of 1.14 kg/t over 78 days and required no lime addition to maintain optimal leach pH above 10.5

A potential heap leach processing concept

Wesley Whymark, CEO & Director, comments: "These results are very encouraging, demonstrating that Pardo mineralization is responsive to cyanide leaching and, importantly, that recovery is front-loaded. At a -1/4 inch crush, 72% of the gold was recovered in 48 days. This gives us a clear starting point to optimize cycle time, crush size and reagent consumption. The most compelling opportunity is how leaching could fit into a broader and flexible processing strategy at Pardo. We are evaluating ore sorting to produce a smaller-volume, higher-grade product for transport to an existing mill. The lower-grade fraction could potentially remain on site for lower-cost heap leaching rather than being hauled and conventionally milled. Our next step is to directly test different lower-grade mineralization and sorter products and use those results to guide future economic studies."

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