RECLAMATION PROVISION (Tables)

12 Months Ended

Dec. 31, 2019

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,
	2019		2018
Asset retirement obligations - long-term, beginning of year	$	371,132	$	341,077
Asset retirement obligations - current, beginning of year		3,856		8,609
Current year additions and changes in estimate, net		36,032		45,470
Current year accretion		5,791		7,500
Liabilities settled		(3,839)		(2,315)
Foreign exchange revaluation		15,822		(25,353)
Reclassification from long-term to current, end of year		(9,377)		(3,856)
Asset retirement obligations - long-term, end of year	$	419,417	$	371,132

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,
	2019		2018
Environmental remediation liability - long-term, beginning of year	$	9,615	$	4,191
Environmental remediation liability - current, beginning of year		1,555		1,429
Current year additions and changes in estimate, net		2,600		8,285
Liabilities settled		(3,269)		(2,370)
Foreign exchange revaluation		506		(365)
Reclassification from long-term to current, end of year		(3,078)		(1,555)
Environmental remediation liability - long-term, end of year	$	7,929	$	9,615