$93bn a year needed for Africa infrastructure

Zambia suffered a nationwide blackout following a power system disturbance.

The mine’s four-week trailing average production reached almost 1,900 ounces, below the 2,000 to 2,500 ounces range Hummingbird expected.

A new report details subpar investor returns in the mining industry over the last decade, particularly big cap diversified companies which have not adapted to new realities.

Silicon can hold 10 times as many lithium ions by weight as graphite, but developing the battery technology to scale sustainably has met its share of challenges.