Schedule of movements in interest in resource properties

The movements in the iron ore royalty interest during the year ended December 31, 2023 were as follows:


			Reclassification
	Opening		to assets		Ending
Costs	balance		held for sale		balance
Iron ore royalty interest	$	218,203	$	—	$	218,203


	Opening				Ending
Accumulated depreciation	balance		Additions		balance
Iron ore royalty interest	$	16,401	$	5,168	$	21,569
Net book value	$	201,802			$	196,634

The movements in the iron ore royalty interest and hydrocarbon development and production assets previously included in interests in resource properties during the year ended December 31, 2022 were as follows:


					Reclassification
	Opening		Decommissioning		to assets		Ending
Costs	balance		obligations		held for sale		balance
Iron ore royalty interest	$	218,203	$	—	$	—	$	218,203
Hydrocarbon development and production assets		46,592		1,339		(47,931)		—
	$	264,795	$	1,339	$	(47,931)	$	218,203


					Reclassification
	Opening				to assets		Ending
Accumulated depreciation	balance		Additions		held for sale		balance
Iron ore royalty interest	$	11,764	$	4,637	$	—	$	16,401
Hydrocarbon development and production assets		15,332		2,559		(17,891)		—
		27,096	$	7,196	$	(17,891)		16,401
Net book value	$	237,699					$	201,802

Schedule of decommissioning obligations


	2023		2022
Decommissioning obligations, beginning of year	$	—	$	15,096
Changes in estimates		—		1,339
Accretion		—		245
Payments		—		(47)
Reclassification to liabilities relating to assets held for sale		—		(16,633)
Decommissioning obligations, end of year	$	—	$	—