Mining billionaire gets help from ex-spies in bitter legal fight

The target group was the the top diamond consumer in 2015, a year in which most commodities plummeted, hitting the mining industry very hard.

A drill program at the mine's North Kao deposit has added 262,000 ounces to the reserves, extending Karma's life to more than 10 years.

Miners and explorers are only spending a third of what they did four years ago – and proportion of greenfield exploration are at record lows.

The company originally intended to combine its Tongo project with Tonguma, but it has now decided to become the mine's operator.

The world's No.1 iron-ore producer recorded a net profit of $3.98 billion in 2016, a significant recovery from a loss of $12.13 billion it reported a year earlier.

A surge in commodity prices combined with its multibillion-dollar asset fire-sale has put the company in a position to pay big dividends and explore acquisitions.

Work on AngloGold Ashanti's Mponeng gold mine in South Africa started in 1981 – a brownfield expansion project will extend the mine's life beyond 2050.

The world's number five diversified miner posted its first annual net profit in five years.

Sherritt's dream of lifting Madagascar out of poverty and making a handsome packet for itself from the proceeds of a huge nickel mine appear to be in jeopardy.