Norsk Hydro ASA engages in producing and supplying alumina and primary aluminum. It operates through the following segments: Hydro Bauxite and Alumina, Hydro Aluminium Metal, Hydro Extrusions, Hydro Energy, Hydro Metal Markets, and Other. The Hydro Bauxite and Alumina segment includes bauxite mining activities, production of alumina, and related commercial activities, primarily the sale of alumina. The Hydro Aluminium Metal segment focuses on primary aluminium production and casting activities. The Hydro Extrusions segment delivers products within extrusion profiles, building systems and precision tubing, and is operating several recycling facilities, both integrated with its extrusion plants and separate plants. The Hydro Energy refers to operating and commercial responsibility for Hydro's power stations in Norway, a trading and wholesale business in Brazil, and energy sourcing for Hydro¿s world-wide operations. The Hydro Metal Markets is involved in all sales activities relating to products from primary metal plants and operational responsibility for stand-alone recyclers as well as physical and financial metal trading activities. The company was founded on December 2, 1905 and is headquartered in Oslo, Norway.