Rare Earth Mining and Processing Scar China

choi

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Keith Bradsher, After China’s Rare Earth Embargo, a New Calculus for Toxic
Work. New York Times, Oct. 30, 2010 (title in the print).
http://www.nytimes.com/2010/10/30/business/global/30rare.html?scp=1&sq=baotou&st=cse
("China’s own fast-growing manufacturing industries now consume more rare
earths than the rest of the world combined")

Note:
(a) calculus (n; Latin, stone (used in reckoning)): "CALCULATION"
www.m-w.com

(b) Aluminium oxide
http://en.wikipedia.org/wiki/Aluminium_oxide
(Al2O3; commonly referred to as alumina)

(c) thorium
http://en.wikipedia.org/wiki/Thorium
(symbol Th and atomic number 90; a naturally occurring, slightly radioactive
metal; discovered it in 1828 and named it after Thor, the Norse god of
thunder)



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