FILE- Striking mine workers armed with machetes, sticks, and spears march 

FILE-  Striking mine workers armed with machetes, sticks, and spears march to a smelter plant at the Lonmin Platinum Mine near Rustenburg, Wednesday, Sept, 12, 2012. Anglo American Platinum Ltd., the world's largest producer of the precious metal announced Monday Feb. 4, 2013 an operating loss of $715 million in 2012 due to violent labor unrest in South Africa. (AP Photo/Denis Farrell, file)
Associated Press
FILE- Striking mine workers armed with machetes, sticks, and spears march to a smelter plant at the Lonmin Platinum Mine near Rustenburg, Wednesday, Sept, 12, 2012. Anglo American Platinum Ltd., the world's largest producer of the precious metal announced Monday Feb. 4, 2013 an operating loss of $715 million in 2012 due to violent labor unrest in South Africa. (AP Photo/Denis Farrell, file)
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