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REVENUE AND COST OF SALES (Tables)
 12 Months Ended
Dec. 31, 2021
Schedule of Revenue

 

 

2021

 

 

2020

 

 

2019

 

Concentrate sales

 

$11,208

 

 

$15,304

 

 

$31,417

 

Provisional pricing adjustments

 

 

20

 

 

 

718

 

 

 

329

 

 

 

$11,228

 

 

$16,022

 

 

$31,746

 
Schedule of Cost of Sales

 

 

2021

 

 

2020

 

 

2019

 

Production costs

 

$4,905

 

 

$11,443

 

 

$27,949

 

Stand-by costs

 

 

800

 

 

 

2,394

 

 

 

-

 

Inventory net realizable adjustment

 

 

-

 

 

 

-

 

 

 

387

 

Depreciation and depletion

 

 

1,976

 

 

 

1,995

 

 

 

3,680

 

 

 

$7,681

 

 

$15,832

 

 

$32,016