17.12.2008 - Tungsten: heavy metal (Including Cello)
From Hardassetsinvestor.com: Hard Metals, or cemented carbides, which are nearly as hard as diamonds and used in a wide range of applications from carpentry tools to hot rolls for rolling mills in the steel industry; and dies, punches and cutting tools for stone, cast iron, nonferrous alloys and steel. Tiny hard metal "microdrills" are even used in machine-printed circuit boards..... Full Article: Source