Rio Tinto ups stake in Sovereign Metals with $12.4m investment

Rio Tinto (ASX, LON: RIO) is investing A$18.5 million ($12.4m) to increase its stake in Australia’s Sovereign Metals (ASX: SVM) (LON: SVML), which is advancing the Kasiya rutile-graphite project in Malawi. The move by the world’s second largest miner will...