Walied+Kassem+Cobalt+3

=History of Cobalt:= Cobalt was discovered by the Swedish chemist George Brandt credited with isolating cobalt in 1735. He was able to show that cobalt was the source of the blue color in glass. Cobalt has been detected in Egyptian sculpture and Persian jewelry from the third millennium BC, in the ruins of Pompeii, and in China dating from the Tang dynasty. Cobalt compounds have been used for centuries to color porcelain, glass, pottery, tile and enamel. Cobalt compounds have been used for centuries to impart a rich blue color to glass, glazes, and ceramics. In 2005, the Democratic Republic of the Congo was the top producer of cobalt with almost 40% world share followed by Canada, Zambia, Russia, Brazil and Cuba,