The Key Challenges Facing Rio Tinto's Walsh in 2013

Feb. 13 (Bloomberg) -- Bloomberg's Rosalind Chin explores the key challenges facing Sam Walsh, CEO of Rio Tinto's iron ore unit. (Source: Bloomberg)
Mila Kunis Helps Miner Become Top Emerald Producer
23:34 - Gemfields CEO Ian Harebottle discusses the gemstone business with Bloomberg's Pimm Fox on "Taking Stock." (Source: Bloomberg)
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