Financial instruments (Tables)

12 Months Ended

Jun. 30, 2023

Financial instruments [Abstract]

Financial Asset or Liability by Currency

The Group’s exposure to foreign currency risk arises when a Group entity holds a financial asset or liability in a currency other than the functional currency of that entity. At the end of the reporting period, the Group’s exposure to foreign currency risk was as follows (denominated in US Dollars):

	Financial assets				Financial liabilities
	30 June 2023		30 June 2022		30 June 2023		30 June 2022
	US$’000		US$’000		US$’000		US$’000
US dollars		96,888		96,648		32,619		110,265
Canadian dollars		124,549		154,328		37,390		30,135
		221,437		250,976		70,009		140,400

Sensitivity Analysis

The following table illustrates sensitivities to the Group’s exposure to changes in exchange rates. The table indicates the impact on how profit and equity values reported at the end of the reporting period would have been affected by changes in the relevant risk variables that management considers to be reasonably possible. These sensitivities assume that the movement in a particular variable is independent of other variables, each scenario assumes no change to other variables.

	Strengthened									Weakened
30 June 2023	Change %			Effect on profit before tax US$’000			Effect on equity US$’000			Change %			Effect on profit before tax US$’000			Effect on equity US$’000
US dollar		10	%		5,843			5,843			10	%		(7,141	)		(7,141	)
Canadian dollar		10	%		4,267			4,267			10	%		(4,267	)		(4,267	)
Australian dollar		10	%		(10,854	)		(10,854	)		10	%		10,534			10,534
					(744	)		(744	)					(874	)		(874	)

Remaining Contractual Maturity for Financial Instrument Liabilities

The following table details the Group’s remaining contractual maturity for its financial instruments and other liabilities. The table presents the undiscounted cash flows of financial liabilities based on the earliest date on which the financial liabilities are required to be paid. The table includes both interest and principal cash flows disclosed as remaining contractual maturities and therefore these totals may differ from their carrying amount in the consolidated statement of financial position.

	Weighted average contractual interest rate		1 year or less		Between 1 and 2 years		Between 2 and 5 years		Over 5 years		Remaining contractual maturities
30 June 2023	%		US$'000		US$'000		US$'000		US$'000		US$'000
Non-derivatives
Trade and other payables		-		13,541		-		-		-		13,541
Lease liabilities		-		335		326		446		2,270		3,377
Total non-derivatives				13,876		326		446		2,270		16,918

	Weighted average contractual interest rate			1 year or less		Between 1 and 2 years		Between 2 and 5 years		Over 5 years		Remaining contractual maturities
30 June 2022	%			US$’000		US$’000		US$’000		US$’000		US$’000
Non-derivatives
Trade and other payables		-			18,813		-		-		-		18,813
Mining hardware finance		11.35	%		61,988		47,421		-		-		109,409
Lease liabilities		-			207		222		443		2,435		3,307
Total non-derivatives					81,008		47,643		443		2,435		131,529