By Charlie Conchie The break-up of Anglo American could trigger a wave of further bids from global mining giants if its management sees the plans through to completion, a top shareholder has said. The London-listed miner unveiled a major shake-up this morning that will see it carve off its diamond business De Beers and demerge its platinum, nickel and coal divisions. Bosses at Anglo kicked off the review last year but have come under pressure from shareholders to publish the plans in recent weeks after rival BHP tabled two bids for the firm. Under the terms of BHP’s second $43bn (£34bn) offer,…