RECLAMATION PROVISION (Tables)

12 Months Ended

Dec. 31, 2021

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,
	2021		2020
Asset retirement obligations - non-current, beginning of year	$	635,648	$	419,417
Asset retirement obligations - current, beginning of year		11,320		9,377
Current year additions and changes in estimate, net(i)		72,181		198,843
Current year accretion		6,554		3,502
Liabilities settled		(3,213)		(1,892)
Foreign exchange revaluation		(10,985)		17,721
Reclassification from non-current to current, end of year		(4,547)		(11,320)
Asset retirement obligations - non-current, end of year	$	706,958	$	635,648

Note:

(i) Current year additions include $48.9 million related to the acquisition of TMAC.

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,
	2021		2020
Environmental remediation liability - non-current, beginning of year	$	16,135	$	7,929
Environmental remediation liability - current, beginning of year		3,950		3,078
Current year additions and changes in estimate, net		1,048		10,480
Liabilities settled		(2,816)		(1,539)
Foreign exchange revaluation		174		137
Reclassification from non-current to current, end of year		(3,000)		(3,950)
Environmental remediation liability - non-current, end of year	$	15,491	$	16,135