2012 Mining Billionaires: #20 Ivan Glasenberg, #21 Nicky Oppenheimer and family, #22 Beny Steinmetz

#20 Ivan Glasenberg One of three Glencore International billionaires on the list as CEO Ivan Glasenberg (pictured May 2012) enjoyed a $110 million pay day in March thanks to the commodities giant's maiden full-year dividend payment. Glencore was founded in...