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Reclamation and Closure Cost Provisions
12 Months Ended
Dec. 31, 2022
Reclamation Obligation [Abstract]  
Reclamation and Closure Cost Provisions RECLAMATION AND CLOSURE COST PROVISIONS
USAMexicoBrazilCanadaTotal
Balance – December 31, 2020
$27,111 $49,642 $44,038 $— $120,791 
Assumed in Premier Acquisition (note 5(c))— 11,850 — 1,631 13,481 
Disposals— — (7,895)— (7,895)
Accretion362 3,715 2,434 24 6,535 
Change in estimates1,001 (18,943)410 924 (16,608)
Reclamation expenditures— (277)(409)— (686)
Reclassified to assets held for sale (note 5(a))— (11,863)— — (11,863)
Foreign exchange gain— (2,221)(2,372)(14)(4,607)
Balance – December 31, 2021
28,474 31,903 36,206 2,565 99,148 
Disposals 332   332 
Accretion699 2,869 1,967 83 5,618 
Change in estimates(1,442)(5,200)(4,298)3,451 (7,489)
Reclamation expenditures (442)(1,809) (2,251)
Foreign exchange loss (gain) 1,931 1,809 (259)3,481 
Foreign currency translation   (123)(123)
Balance – December 31, 2022
$27,731 $31,393 $33,875 $5,717 $98,716 
At December 3120222021
Classified and presented as:
Current(1)
$3,202 $3,583 
Non-current 95,514 95,565 
Total reclamation and closure cost provisions$98,716 $99,148 
(1)    Included in other current liabilities.
The Company’s environmental permits require it to reclaim any land disturbed during mine development, construction and operations. The majority of these reclamation costs are expected to be incurred subsequent to the end of the operation to which they relate. The Company’s provisions for reclamation and closure costs represent management’s best estimate of the future reclamation and mine closure activities based on the level of known disturbance at the reporting date, known legal requirements and internal and external cost estimates.
The Company’s reclamation and closure cost provisions at December 31, 2022 were calculated as the present value of the expected future cash flows estimated using inflation rates of 2.0% to 5.5% (2021 – 2.0% to 3.5%) and discount rates of 2.9% to 11.7% (2021 – 1.3% to 8.7%) depending on the region in which the costs will be incurred. At December 31, 2022, the total undiscounted expected future cash flows of the Company’s reclamation and closure cost provisions were $186.6 million (2021 – $182.7 million).
The Company is required to post security for reclamation and closure costs relating to Mesquite and Greenstone. At December 31, 2022, the Company has met its security requirements in the form of bonds posted through surety underwriters totaling $27.7 million (2021 – $27.7 million) for Mesquite and $9.4 million (2021 - nil) for Greenstone.