McEwen Files NI 43-101 Technical Reports: Grey Fox Prefeasibility Study in Ontario and Lookout Mountain and Windfall Mineral Resource Estimate in Nevada

This section is Partnership Content suppliedThe content in this section is supplied by GlobeNewswire for the purposes of distributing press releases on behalf of its clients. Postmedia has not reviewed the content. by GlobeNewswire Article contentTORONTO, July 22, 2026 (GLOBE NEWSWIRE) — McEwen Inc.

(NYSE/TSX: MUX) (“McEwen” or the “Company”) is pleased to announce that it has filed on SEDAR+ technical reports prepared in accordance with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”) for its Grey Fox Project in Ontario, part of the Fox Complex, and its Lookout Mountain and Windfall deposits in Nevada, part of the Gold Bar Mine Complex.Sign In or Create an AccountEmail AddressContinueor View more offersArticle contentGrey Fox ReportArticle contentWe apologize, but this video has failed to load.Try refreshing your browser, ortap here to see other videos from our team.

Article contentThe report for Grey Fox is titled “Grey Fox Project Prefeasibility Study NI 43-101 Technical Report” (the “Grey Fox Report”) and has an effective date of June 8, 2026 and a report date of July 17, 2026. The Grey Fox Report supports the results of the Grey Fox Prefeasibility Study (“PFS”) previously announced by the Company on June 8, 2026. Key results include:Article contentArticle contentA 15-year project life for Grey Fox, extending production at the Fox Complex through 2041, supported by Probable Mineral Reserves of 9.

41 million tonnes grading 3.24 g/t Au and containing 980,300 gold ounces.Production profile: Annual payable gold production projected to average approx.

43,000 ounces during Project Years 2 through 8 and approx. 87,000 ounces during Project Years 9 through 14, before tapering in Project Year 15.Base case at $3,000 per ounce gold: Life-of-Mine cash costs of $1,833 per ounce and all-in sustaining costs (“AISC”) of $2,212 per ounce; post-tax NPV (5%) of $282 million, IRR of 24.

8% and payback of 4.6 years.Enhanced case at $4,500 per ounce gold: Life-of-Mine cash costs of $2,042 per ounce and AISC of $2,421 per ounce; post-tax NPV (5%) of $841 million, IRR of 55% and payback of 2.

3 years.Mineral Resources (exclusive of Reserves): Additional 9.68 million tonnes at 2.

25 g/t Au for 701,000 gold ounces Indicated and 4.70 million tonnes at 2.57 g/t Au for 388,000 gold ounces Inferred.

Article contentTop StoriesGet the latest headlines, breaking news and columns.There was an error, please provide a valid email address.Sign UpBy signing up you consent to receive the above newsletter from Postmedia Network Inc.

Thanks for signing up!A welcome email is on its way. If you don't see it, please check your junk folder.

The next issue of Top Stories will soon be in your inbox.We encountered an issue signing you up. Please try againInterested in more newsletters?

Browse here.Article contentLookout Mountain and Windfall ReportArticle contentThe report for Lookout Mountain and Windfall is titled “NI 43-101 Technical Report on the Mineral Resources Estimate for the Lookout Mountain and Windfall Deposits, Eureka, Nevada, USA” (the “Lookout Mountain and Windfall Report”) and has an effective date of May 4, 2026 and a report date of July 2, 2026.Article contentArticle contentThe report supports the Mineral Resource estimates previously announced on March 12, 2026 for Lookout Mountain and May 6, 2026 for Windfall.

Key results include:Article contentTogether, the two deposits contain 629,800 gold ounces in Indicated Mineral Resources and 262,000 gold ounces in Inferred Mineral Resources.Lookout Mountain: Indicated Mineral Resources of 19.57 million tonnes at 0.

64 g/t Au, containing 402,300 gold ounces, and Inferred Mineral Resources of 7.29 million tonnes at 0.57 g/t Au, containing 134,200 gold ounces.

Windfall: Indicated Mineral Resources of 9.40 million tonnes at 0.75 g/t Au, containing 227,500 gold ounces, and Inferred Mineral Resources of 2.

60 million tonnes at 1.53 g/t Au, containing 127,800 gold ounces.Approx.

89% of Lookout Mountain’s contained gold ounces and 100% of Windfall’s contained gold ounces are in oxide mineralization. Both estimates are constrained by optimized open pits using a gold price of $3,000 per ounce, and the oxide material is considered potentially amenable to heap-leach processing.Article contentAll dollar figures in this news release are in US dollars unless otherwise specified.

Advertisement 1This advertisement has not loaded yet.Trending Baby boomers are trying to unload their stuff. Does anybody want it?

Personal Finance Posthaste: Brace yourself, we're about to be hit by what could be the mother of all supply shocks News Advertisement 1Story continues belowThis advertisement has not loaded yet, but your article continues below. Bank of Canada would cut rates if not for Iran war, says Benjamin Tal Economy Opinion: Canada has its own Strait of Hormuz FP Comment Why Trump’s new Canada tariffs are about autos, alcohol and cheese Economy Advertisement 2AdvertisementThis advertis