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Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Recurring Basis

Fair value measurements

Schedule of Assets and Liabilities Measured at Fair Value


		Quoted prices in			Significant other			Significant
		active markets for			observable			unobservable
		identical assets			inputs			inputs				Aggregate
As at June 30, 2024		(Level 1)			(Level 2)			(Level 3)				fair value
Equity investments		$	263.0		$	—		$	4.5			$	267.5
Warrants			—			10.5			—				10.5
Receivables from provisional concentrate sales			—			4.6			—				4.6
		$	263.0		$	15.1		$	4.5			$	282.6


		Quoted prices in			Significant other			Significant
		active markets for			observable			unobservable
		identical assets			inputs			inputs				Aggregate
As at December 31, 2023		(Level 1)			(Level 2)			(Level 3)				fair value
Equity investments		$	241.8		$	—		$	4.6			$	246.4
Skeena Convertible Debenture			—			—			24.8				24.8
Warrants			—			8.1			—				8.1
Receivables from provisional concentrate sales			—			5.7			—				5.7
		$	241.8		$	13.8		$	29.4			$	285.0