Shareholder worry on Xstrata-Glencore

The knot appears to to be formally tied. Mining giant Xstrata has confirmed its plans to merge with commodity player Glencore (pic: Glencore boss Ivan Glasenberg) in a £56bn mega deal.

The union was announced on the day Xstrata declared a 20% surge in 2011 profits to £3.8bn. But the deal could still be given a rough ride by some important players - the company owners.