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Embedded Derivatives (Tables)
6 Months Ended
Jun. 30, 2018
Embedded Derivatives  
Summary of unsettled sales contracts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gold

 

Silver

 

Copper

 

Lead

 

Zinc

 

    

(ounces)

    

(ounces)

    

(tonnes)

    

(tonnes)

    

(tonnes)

Under contract

 

 

8,928

 

 

891,195

 

 

740

 

 

2,941

 

 

7,959

Average forward price (per ounce or tonne)

 

$

1,318

 

$

16.61

 

$

6,934

 

$

2,440

 

$

3,263