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COST OF SALES (Tables)
6 Months Ended
Jun. 30, 2019
Analysis of income and expense [abstract]  
Cost of sales
  
Gold
Copper
Other3
Total
For the three months ended June 30
2019

2018

2019

2018

2019

2018

2019

2018

Direct mining cost1,2

$921


$716


$63


$69


$—


$2


$984


$787

Depreciation
431

290

28

30

7

8

466

328

Royalty expense
78

43

9

8



87

51

Community relations
7

9

1

1



8

10

 

$1,437


$1,058


$101


$108


$7


$10


$1,545


$1,176

  
         Gold
         Copper
         Other3
        Total
For the six months ended June 30
2019

2018

2019

2018

2019

2018

2019

2018

Direct mining cost1,2

$1,815


$1,406


$139


$135


$—


$4


$1,954


$1,545

Depreciation
815

588

70

49

16

16

901

653

Royalty expense
144

93

21

17



165

110

Community relations
13

17

2

3



15

20

 

$2,787


$2,104


$232


$204


$16


$20


$3,035


$2,328


1 
Direct mining cost includes charges to reduce the cost of inventory to net realizable value as follows: $12 million for the three months ended June 30, 2019 (2018: $2 million) and $16 million for the six months ended June 30, 2019 (2018: $5 million).
2 
Direct mining cost includes the costs of extracting by-products.
3 
Other includes realized hedge gains and losses and corporate amortization.