Phoenix, Arizona--(Newsfile Corp. - May 15, 2024) - Excelsior Mining Corp. (TSX: MIN) (OTCQB: EXMGF) (FSE: 3XS) ("Excelsior" or the "Company") is pleased to announce that Nuton LLC ("Nuton"), a Rio Tinto venture has elected to proceed to Stage 2 of the existing Option Agreement (the "Agreement") (see Excelsior press release dated July 31, 2023). The purpose of the Agreement is for Nuton to evaluate the use of its Nuton™ copper heap leaching technologies ...
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