NexMetals Increases Selkirk Mineral Resource by 70%, Establishing 1.1 Billion Pounds of Copper Equivalent in the Indicated Category and 200 Million Pounds in Inferred Category

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Vancouver, British Columbia--(Newsfile Corp. - June 24, 2026) - NexMetals Mining Corp. (TSXV: NEXM) (NASDAQ: NEXM) (the "Company" or "NEXM") is pleased to announce an updated Mineral Resource Estimate ("2026 MRE") for its Selkirk Project ("Selkirk" or the "Project") in Botswana. Selkirk is a past-producing copper-nickel-platinum group elements ("PGEs") project located approximately 75 kilometres northeast of the Company's flagship Selebi Projec