Trevali Mining appoints Board member Jill Gardiner as Chair of the Board of Directors and adds CEO Ricus Grimbeek to the Board

– CANADA, Vancouver –  Trevali Mining Corporation (TSX: TV | BVL: TV | OTC: TREVF | FRA: 4TI), today announced that Jessica McDonald has stepped down as Chair and a member of the Board of Directors and that Jill Gardiner, a director and current Chair of the Compensation and Human Resources Committee, has been appointed in the role of Board Chair.…