a.  Amounts reflect total cash payments to governments in Other Countries of $21 million as reported on page 18 of the 2018 WTSD Report. 
b.  Employee payroll taxes, dividends, property taxes and certain other taxes are included in payments to suppliers and dividends in the summary of key economic contributions by operating region table as that data is derived primarily from FCX’s publicly reported segment data. Therefore, these taxes are excluded from cash payments to governments for purposes of reporting direct economic contributions on page 3 of the 2018 WTSD Report.