Sierra Leone’s small-scale miners toil for diamonds

China’s CMOC Group has strengthened its status as the world’s cobalt king.

In the first half of the year, Debswana sold diamonds worth $1.29 billion compared to $2.54 billion registered in the same period last year.

Simfer is a joint venture formed by Rio Tinto, Aluminum Corp. of China Ltd., known as Chinalco, and the Guinean government. 

Canyon is developing the world-class Minim Martap bauxite project in Cameroon.