Guilherme Cavalcanti, Chief Financial Officer at Vale S.A. mining company, center, speaks during the company listing ceremony in Hong Kong Stock Exchange Wednesday, Dec. 8, 2010. The Brazilian mining ... more 
Guilherme Cavalcanti, Chief Financial Officer at Vale S.A. mining company, center, speaks during the company listing ceremony in Hong Kong Stock Exchange Wednesday, Dec. 8, 2010. The Brazilian mining company, the world's biggest producer of iron ore, says that a secondary listing of its shares start trading on the Hong Kong stock exchange on Wednesday as it seeks greater access to investors in China's booming economy. less 
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Associated Press | Photo By Kin Cheung
Tue, Dec 7, 2010 11:09 PM EST