carstene writes: AL was once more expensive then gold, until a process was invented to separate it from its oxide electrically instead of chemically. A company in the UK, now claims to of done the same with tantalum, reducing its cost by an order of magnitude. The process can also work with other exotic metals such as titanium.
"I shall expect a chemical cure for psychopathic behavior by 10 A.M. tomorrow,
or I'll have your guts for spaghetti."
-- a comic panel by Cotham