RECLAMATION PROVISION (Tables)

12 Months Ended

Dec. 31, 2020

Asset retirement obligation

Asset retirement obligation and environmental remediation liability

Schedule of environmental remediation liability and reclamation provisions

	As at		As at
	December 31,		December 31,
	2020		2019
Asset retirement obligations - long-term, beginning of year	$	419,417	$	371,132
Asset retirement obligations - current, beginning of year		9,377		3,856
Current year additions and changes in estimate, net		198,843		36,032
Current year accretion		3,502		5,791
Liabilities settled		(1,892)		(3,839)
Foreign exchange revaluation		17,721		15,822
Reclassification from long-term to current, end of year		(11,320)		(9,377)
Asset retirement obligations - long-term, end of year	$	635,648	$	419,417

Environmental remediation liability

Asset retirement obligation and environmental remediation liability

Schedule of environmental remediation liability and reclamation provisions

	As at		As at
	December 31,		December 31,
	2020		2019
Environmental remediation liability - long-term, beginning of year	$	7,929	$	9,615
Environmental remediation liability - current, beginning of year		3,078		1,555
Current year additions and changes in estimate, net		10,480		2,600
Liabilities settled		(1,539)		(3,269)
Foreign exchange revaluation		137		506
Reclassification from long-term to current, end of year		(3,950)		(3,078)
Environmental remediation liability - long-term, end of year	$	16,135	$	7,929