Opening Of Rio Tinto's Underground Expansion Of The Argyle Diamond Min

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Alan Davies, chief executive officer of diamonds and minerals at Rio... News PhotoAsia,Australasia,Australia,Australian Culture,Business,CEO,Ceremony,Corporate Business,Delivering,Diamond - Gemstone,Finance,Gemstone,Growth,Kununurra,Man Made Object,Mine,Miner,Mineral,Mining,Oceania,Opening Ceremony,Photograph,Precious Gem,Rio Tinto Group,Standing,VerticalPhotographer Collection: Bloomberg 2013 BloombergAlan Davies, chief executive officer of diamonds and minerals at Rio Tinto Group, stands for a photograph during the opening ceremony of the company's underground expansion of the Argyle diamond mine in Kimberley, Australia, on Tuesday, April 30, 2013. Production at Argyle, which supplies more than 90 percent of the world’s pink diamonds, will rise to 20 million carats annually as production moves underground, while costs will fall. Photographer: Ian Waldie/Bloomberg via Getty Images