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Reclamation and closure cost obligations (Tables)
12 Months Ended
Dec. 31, 2020
RECLAMATION AND CLOSURE COST OBLIGATIONS  
Schedule of reclamation and closure cost obligations
Changes to the reclamation and closure cost obligations are as follows:

(in millions of U.S. dollars)Rainy
River
New AftonCerro San
Pedro
BlackwaterTotal
CHANGES TO RECLAMATION AND
CLOSURE COST OBLIGATIONS
Balance – December 31, 201853.6 10.7 20.0 8.3 92.6 
Reclamation expenditures(0.2)— (8.6)— (8.8)
Unwinding of discount1.1 0.2 1.2 0.2 2.7 
Revisions to expected cash flows9.7 6.4 (0.6)0.5 16.0 
Foreign exchange movement2.8 0.7 0.6 0.4 4.5 
Balance – December 31, 201967.0 18.0 12.6 9.4 107.0 
Less: current portion of closure costs (Note 7)(1.4)— (10.9)— (12.3)
Non-current portion of closure costs65.6 18.0 1.7 9.4 94.7 
Balance – December 31, 201967.0 18.0 12.6 9.4 107.0 
Reclamation expenditures(1.2) (5.6) (6.8)
Unwinding of discount1.0 0.2 0.4 0.1 1.7 
Revisions to expected cash flows12.9 15.1 (3.4)0.8 25.4 
Foreign exchange movement1.7 0.9 (0.4)(0.4)1.8 
Liabilities sold (Note 10)   (9.9)(9.9)
Balance – December 31, 202081.4 34.2 3.6  119.2 
Less: current portion of closure costs (Note 7)(2.5) (3.2) (5.7)
Non-current portion of closure costs78.9 34.2 0.4  113.5