The expansion of Aitik, Sweden's largest mine, will double the mine's ore production, is one of the biggest industrial investments in Sweden in recent years.
Aitik is one of Boliden's four mining areas. The Aitik open pit mine produces ore containing copper, gold and silver.

Over SEK 6 billion (€ 3750 million) have been invested with a view to increasing the production rate and extending the mine's lifespan, while simultaneously achieving advantages of scale and reducing the cost per tonne produced. A new concentrator has been constructed, with new facilities for concentration, ore production and outward deliveries.

The project was started in 2006 and completed in the first half of 2010. Production is now successively being run in, and will achieve an annual capacity of 36 million tonnes of ore in 2014.