FILE PHOTO: A worker waters the site of a rare earth metals mine at Nancheng county, Jiangxi province January 16, 2011. REUTERS/Stringer (CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA/File Photo
FILE PHOTO: A worker waters the site of a rare earth metals mine at Nancheng county, Jiangxi province January 16, 2011. REUTERS/Stringer (CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA/File Photo