RE:RE:Average Reference Price $USD Q3 2021/ Q2 2021/ Q3 2020CIBC Base Metals Reporting, The Week That Was - October 29, 2021 2 Inflationary Cost Pressure A key theme across the group that reported was that inflationary cost pressures continue to apply pressure on unit operating costs. In some instances, this cost pressure is partially offset by foreign exchange impacts from a stronger USD. We expect this theme to continue through the remainder of reporting season, and we will continue to monitor costs, in an inflationary environment.