Science: Backyard Aluminum

"This is the greatest contribution to aluminum metallurgy since the Hall process of 1886—if it is cheap as the inventor says." So commented the Aluminum Co. of America on a new process for extracting alumina from common clay announced last week by Chemical Engineer Arthur W. Hixson of Columbia University.

Heretofore the only commercial source of alumina—the oxide from which the pure metal is produced—has been bauxite, about half of which is now imported from British and Dutch Guiana, since there are only some 13,000,000 tons of known high-grade bauxite deposits in the U.S.—about...

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