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Excelsior releases updated PFS on Gunnison, PEA on Johnson Camp

Staff Writer | March 30, 2022 | 8:37 am News Copper 

Excelsior Mining (TSX: MIN) has released results of an updated prefeasibility study on the North Star Deposit of its Gunnison copper project and a preliminary economic assessment on the Johnson Camp mine heap leach, both situated in Cochise county, southeastern Arizona. Gunnison...

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