Phoenix, Arizona--(Newsfile Corp. - June 22, 2021) - Excelsior Mining Corp. (TSX: MIN) (FSE: 3XS) (OTCQX: EXMGF) ("Excelsior" or the "Company") announces that President & CEO, Stephen Twyerould, will present at the Copper Up virtual conference hosted by PI Financial Corp on Thursday, June 24^th at 1pm (Pacific Time). Those wishing to...