Excelsior Mining Corp.: Excelsior Mining Files Technical Report for Updated Preliminary Economic Assessment on Johnson Camp Mine Incorporating Sulfide Leaching Technology
Phoenix, Arizona--(Newsfile Corp. - February 28, 2023) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQB: EXMGF) ("Excelsior" or the "Company") is pleased to announce that it has filed a National