Exhibit 99.1 TASEKO ANNOUNCES IMPROVED ECONOMICS FOR ITS FLORENCE COPPER PROJECT March 30, 2023, Vancouver, BC - Taseko Mines Limited (TSX: TKO; NYSE American: TGB; LSE: TKO) (“Taseko” or the "Company") is pleased to announce the results of recent technical work and updated economics for its 100%-owned Florence Copper Project, located in Arizona, U.S.A (the ‘Florence Copper Project” or “Florence Copper”). The Company has filed a new technical report entitled “NI 43-101 Technical Report - Florence Copper Pro ...