Looking at the after-tax numbers, Duparquet has an NPV with a 5% discount of C$588 million ($430m) and IRR of 18.0%.

Prince Mohammed bin Salman is prepared to pour billions of dollars into tapping the more than $1.3 trillion of metals his government says is buried in the country.

The strengthened treasury would allow the company to advance exploration on the Rogue project's Valley discovery.

The company recorded six fatalities in its financial year which ended on June 30.

A report by Metals Focus showed a 2% year-on-year decline in the miners' combined scope 1 and 2 GHG emissions.

The company says its first resource estimate for the Carangas silver-gold project in Bolivia makes it notable worldwide.