Aterian, a London-listed critical-minerals explorer, and Rio Tinto, the world’s second-largest miner, have reported high-grade lithium hits at their Kinunga joint-venture project in Rwanda, including 3.2 % Li over 3.5 m and 2.1 % Li over 6.9 m. The results, from the first two of 12 planned targets, prompted Rio Tinto to exercise a Stage-1...
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