Glencore has come under criticism from some shareholders for being the last company in Britain's blue-chip FTSE-100 index with an all-male board. Chairman Tony Hayward of mining and commodity trading company Glencore Xstrata is seen during the company's company's annual shareholder meeting in the central Swiss town of Zug May 20, 2014. Mining and commodity trading company Glencore Xstrata will appoint a female director to its board by the end of this year, chairman Hayward said. Glencore has come under criticism from some shareholders for being the last company in Britain's blue-chip FTSE-100 index with an all-male board.