Investing in Sulfur

Rio Tinto - http://www.riotinto.com/

K-Mag - http://www.kmag.com/ - This division of Mosaic Co. (NYSE: MOS) makes potassium magnesium sulfate fertilizers which are an excellent source of sulfur, magnesium, and potassium.

ESPI High Purity Metals - http://www.espimetals.com/metals/catsulfur.htm