B2Gold Corp Exhibit 99 1 Filed by newsfilecorp com News Release B2Gold Acquires an Additional 23 450 000 Common Shares of Calibre Mining Corp Vancouver December 15 2016 B2Gold Corp TSX BTO NYSE MKT BTG NSX B2G B2Gold or the Company acquires an additional 23 450 000 common shares of Calibre Mining Corp Calibre on