Silicon by inflammation and scarring in the form of nodular lesions in the upper lobes of the lungs. Silicon Silicon is a chemical element with symbol Si and atomic number 14. It is a hard and brittle crystalline solid with a blue-grey metallic lustre; and it is a tetravalent metalloid and semiconductor. It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, and lead are below it. It is relatively unreactive. Because of its large chemical affinity for oxygen, it was not until 1823 that Jöns Jakob Berzelius was first able to prepare
Element Six oil and gas drilling to precision machining and electronics. Products offered by Element Six fall into two broad categories - superabrasives and advanced diamond products. The largest part of the company's business today is in superabrasives. These products are based on the world's hardest materials such as synthetic diamond and cubic boron nitride that are used in a wide range of cutting, grinding and drilling applications range from oil and gas exploration to machine tools, automotive part manufacturing and marble production. Element Six Element Six is a member of the De Beers Group of Companies, its majority shareholder. Element Six