Guinea targets 7 mnt alumina capacity by 2030 Copper slips toward $13,600/t amid Fed rate concerns Base metals on the London Metal Exchange (LME) traded mostly lower on 19 June 2026, with aluminium being the only major gainer. Aluminium rose 0.31% d-o-d to $3,397/t, supported by continued inventory drawdowns. In contrast, zinc recorded the sharpest…