The aluminium producer kicked off the US second quarter reporting season with a larger than forecast profit and positive comments about future demand. So miners dominated the risers in the leading index, with Anglo American adding 37p to £12.82, Fresnillo up 30p at 951p and Vedanta Resources rising 86p to £10.94. Among the mid-caps, iron ore producer Ferrexpo added 16.9p to 155.6p after a positive update showed a 21% rise in output during the second quarter.