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Boliden AB
New Boliden is a Swedish mining and smelting company focusing on production of copper, zinc, lead, gold and silver. Following a series of acquisitions during the 1980s and 1990s the company acquired mining and smelting assets of the Finnish mining and smelting company Outokumpu in 2003. Outokumpu acquired the subsidiary Boliden Contech and Boliden's copper and zinc divisions. As a consequence of the deal, Outokumpu ended up controlling 49 percent of the Boliden shares.
The company has approximately 4,500 employees. The name comes from the Boliden mine, some 30 km northwest of the Swedish town of Skellefteå, where gold was found in 1924. It was once Europe's largest and richest gold mine, but since 1967 the mine has been defunct.
==Mines==
Business Area Mines conducts exploration, mining and milling operations in Sweden and Ireland. Its main products are zinc and copper concentrate, with some lead, gold and silver content. The goods produced are sold both to the Group’s own smelters and to external customers. Boliden owns and operates Europe’s biggest zinc mine at Tara in Ireland. Tara became part of Boliden in early 2004, but production began there in 1977, since when over 60 million tonnes of ore have been mined. Boliden also owns Garpenberg, which is Sweden’s oldest mine still in operation. Mining at Garpenberg began back in the 13th century. The mineral-rich Skellefte field lies within the Boliden Area, where almost 30 mines have been opened since production began in the 1920s and where Boliden currently operates the Renström and Kristineberg underground mines and the Maurliden open pit mine. Boliden also owns and operates the Aitik open pit mine, which is one of Europe’s biggest copper mines. Metal grades at Aitik are low, but this is compensated for by high productivity levels and efficient milling processes that also exploit the ore’s gold and silver content. An expansion project that will double Aitik’s ore production to 36 million tonnes per annum by 2014 began in 2007 and will be completed in 2010.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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