RECLAMATION AND REMEDIATION LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2025

Asset Retirement Obligation Disclosure [Abstract]

Schedule of Reclamation and Remediation Liabilities

Changes in Reclamation and remediation liabilities during the six months ended June 30, 2025 and 2024, were as follows (in thousands):


	Six Months Ended June 30, 2025						Six Months Ended June 30, 2024
	Reclamation		Remediation		Total		Reclamation		Remediation		Total
Balance as of January 1	$	209,923	$	135,914	$	345,837	$	173,819	$	—	$	173,819
Additions (1)		220,974		—		220,974		—		261,674		261,674
Changes in estimate and other (2)		9,420		53,507		62,927		11,054		—		11,054
Expenditures		(2,506)		(10,178)		(12,684)		(663)		(77,210)		(77,873)
Accretion expense		11,190		—		11,190		4,829		—		4,829


Balance as of June 30	$	449,001	$	179,243	$	628,244	$	189,039	$	184,464	$	373,503
Less: current portion		(14,404)		(17,932)		(32,336)		(6,784)		(136,753)		(143,537)
Non-current reclamation and remediation liabilities	$	434,597	$	161,311	$	595,908	$	182,255	$	47,711	$	229,966

(1)During the six months ended June 30, 2025, reclamation changes were primarily comprised of an increase of $221.0 million as a result of the acquisition of CC&V. During the six months ended June 30, 2024, the Company recorded a remediation liability of $261.7 million as a result of the Çöpler Incident. The remediation activities include movement of the displaced heap leach material out of the Sabırlı Valley and Manganese pit, sloping and stabilization of the heap leach pad in preparation for permanent closure, construction of a permanent storage facility for the displaced heap leach material, and management of surface and ground water in the Sabırlı Valley.

(2)During the six months ended June 30, 2025, reclamation and remediation changes were primarily comprised of an increase of $9.4 million and $53.5 million, respectively. As discussed above, the Company revised the estimate related to the closure of the Çöpler heap leach pad and construction estimate for the permanent storage facility during the second quarter of 2025. During the six months ended June 30, 2024,

reclamation changes were comprised of an $11.1 million revision in the timing primarily related to the closure of the heap leach pad as a result of the Çöpler Incident.

The following table includes the components of Reclamation and remediation costs for the three and six months ended June 30, 2025 and 2024 (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
		2025		2024		2025		2024
Reclamation adjustments and other	$	9,419	$	—	$	9,419	$	11,229
Reclamation accretion		6,874		2,414		11,190		4,829
Total reclamation costs		16,293		2,414		20,609		16,058

Remediation adjustments and other		53,557		—		53,561		261,674

Total remediation costs		53,557		—		53,561		261,674
Total reclamation and remediation costs	$	69,850	$	2,414	$	74,170	$	277,732