Foreign mineworkers return to South African mines

Debswana, the joint venture between De Beers and the Botswana’s government, is seeking permission to deepen the Jwaneng mine to 830 meters.

Move aims at boosting investment and local ownership of the country's vast mineral resources.

South African engineering and construction group, currently subject of a takeover bid from Germany’s ATON, said projects were located in sub-Saharan Africa, North America and Australasia.

“The recovery of micro-diamonds is extraordinary," said Lithoquest's President and CEO.

North Arrow Minerals wants to focus on finding high-value orange-yellow rocks.

The Northwest Territories and Nunavut, two of the three regions with the lowest income per capita, will see exploration investment to drop again in 2018, Natural Resources Canada says.

The diamond business has been one of the first to embrace blockchain technology wholeheartedly.

Debswana expects growth this year as lower taxes in the US leave consumers with more to spend on luxury goods.

The microwave version of lasers could now be used more widely in a range of applications.