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Reclamation

12 Months Ended

Dec. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Reclamation and mine closure costs are based principally on legal and regulatory requirements. Management estimates costs associated with reclamation of mining properties. On an ongoing basis, management evaluates its estimates and assumptions, and future expenditures could differ from current estimates.

Changes to the Company’s asset retirement obligations for its operating sites are as follows:


	Year Ended December 31,
In thousands		2020		2019
Asset retirement obligation - Beginning		$	134,398	$	133,508
Accretion		11,574		11,968
Additions and changes in estimates		(6,132)		(7,538)
Settlements		(2,720)		(3,540)
Asset retirement obligation - Ending		$	137,120	$	134,398

The Company accrued $2.2 million and $1.9 million at each of December 31, 2020 and December 31, 2019, respectively, for reclamation liabilities related to former mining activities, which are included in Reclamation.