BHP has moved on to focus on other growth opportunities after its failed bid for Anglo American earlier this year, the company's chairman said on Wednesday, weeks before a block on making another offer expires. The world's biggest miner walked away from a $49-billion bid to acquire Anglo in May after it was rebuffed three times. The upcoming end in late November to a six-month freeze on BHP making another approach under UK takeover rules had raised speculation a deal may again be under scrutiny.