Chief executive Richard Gray expects to see a "mini gold rush" in the Scottish Highlands in coming years.

Risk consultancy Verisk Maplecroft foresees as many as 75 countries having to deal with soaring public rage over a variety of topics, including economic inequality.

Even before the rumoured deal, more than 80% of the world's largest cobalt miner's output was tied up for years to come, a new report shows.

The company has until Feb. 5 to make a firm offer or walk away.

The miner said full tenement permitting of Mutamba is now completed and expects to begin production before year-end.

The Canadian miner will not make a firm offer for Centamin, citing a lack of information received during the due diligence process.