Ivan Glasenberg, chief executive officer of Glencore International Plc, arrives at the London Stock Exchange in London, U.K., on Tuesday, May 24, 2011. Glencore International Plc was officially admitted to trading on the main market of the London Stock Exchange today, after raising $10 billion in an initial public offering last week. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
Glencore Xstrata CEO Ivan Glasenberg
