Diversified miner South32 reported solid performances across its aluminium supply chain for the financial year ended June 30, with record production from Mozal Aluminium, in Mozambique, and near-record production at the Hillside aluminium smelter, in South Africa. “Our aluminium smelters and refineries operated at their maximum technical capability,” CEO Graham Kerr said in a webcast on Thursday, noting that the smelters and refineries continue to operate and further test their maximum technical capability.