Investing in Tungsten
Tungsten is a transition metal and has the highest melting point of all non-alloy metals. It has the second highest melting point of any element (after Carbon). The largest use of tungsten is in tungsten carbide, which is a wear-resistant material used in the mining, metalworking, construction, and petroleum industries.
North American Tungsten Corp (CVE: NTC) - http://www.northamericantungsten.com/
Xiamen Tungsten Co (SHA: 600549) - http://www.cxtc.com/
China Tungsten and Hightech Materials Co (SHE: 000657)
Nippon Tungsten Co (TYO: 6998) - http://www.nittan.co.jp/
ESPI High Purity Metals - http://www.espimetals.com/metals/cattungsten.htm