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Mammoth Announces Gold Recoveries Of 87% From Bottle Roll Tests On Coarser-Fraction Material From The Large Carneritos Area On Its Tenoriba Gold-Silver Property, Mexico

Toronto, Canada ( February 5, 2026) – TheNewswire - Mammoth Resources Corp. (TSX-V: MTH), (the “Company”, or “Mammoth”) is pleased to announce results from bottle roll tests performed on a coarser fraction composite sample of oxidized near-surface gold-silver mineralized material collected from assay reject samples of drill holes from the 2021-22 drill campaign, within the large Carneritos area at its 100% owned Tenoriba project, Chihuahua State, Mexico.   Gold recoveries in a bottle roll test of this coarser fraction, oxidized material passing -10 mesh, or 20 times coarser than material previously sampled in preliminary metallurgical testing from this same composite sample, gave recoveries of 87% gold and 67% silver, results of which compare favourably to gold recoveries ranging from 75% to 90% and silver recoveries around 65% in initial, finer fraction bottle roll testing (refer to press release on the Company's web site dated November 9, 2023 ). The majority of the gold and silver leaches within the first 12 hours of a total of a 96-hour test. Moving to a coarser fraction, 20 times coarser than prior testing, bodes well for what we can expect from further testing as we advance to small-scale, pilot mineral extraction and heap leach testing as a step towards a future full-scale operation.