Rio Tinto Flags First Copper Production Using Nuton Technology

MT Newswires · 3d ago
01:58 AM EST, 12/04/2025 (MT Newswires) -- Rio Tinto Group (RIO.L) said Thursday it has produced the first copper using its proprietary Nuton bioleaching technology. The maiden copper cathode was generated in November at the Johnson Camp mine in Arizona, US. The mining group initiated talks with several potential customers for the technology in the US.