Recent listings of Stone Age artifacts from around the world with pictures and descriptions.
Quartz is one of the most common minerals found in the Earth's crust. If pure, quartz forms colorless, transparent and very hard crystals with a glass-like luster. A ...
Impol Group Slovenia has its forty-year-old aluminium cold rolling mill revamped to the latest state of the art by SMS group
Lithium is a rare element, although it is found in many rocks and some brines, but always in very low concentrations. The high-lithium brines usually have obtai