Noront didn't say whether its board was changing its recommendation for BHP's offer, but did say it was reviewing Wyloo's latest bid.

It has completed key growth projects at Canada's Lamaque and Turkey's Kışladağ gold mines and flagged upcoming news on Greek project.

Researchers at the University of Queensland and the University of Geneva are looking into a material produced from mineral ores as a sustainable source of sand.

The company will also grant Tanzania a 16% free-carried interest in its subsidiary Williamson Diamonds Limited.

Writing off Mongolia's debt would speed up the timeline for when the country can start receiving dividends from the project.

Countries' material footprints are comprised of the raw materials they consume domestically, showing where those resources come from globally.