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Derivatives (Tables)
9 Months Ended
Sep. 30, 2022
Derivatives  
Summary of unsettled sales contracts

Gold

Silver

Copper

Lead

Zinc

Total

(ounces)

(ounces)

(tonnes)

(tonnes)

(tonnes)

Under contract

4,784

253,342

282

1,647

3,373

Average forward price (per ounce or tonne)

$

1,741

$

19.52

$

7,738

$

2,011

$

3,474

Unsettled sales contracts value (in thousands)

$

8,329

$

4,945

$

2,182

$

3,312

$

11,718

$

30,486