The Land and Environment Court on Monday granted Boliden a permit for continued and expanded operations at the Aitik mine outside Gällivare.
The permit covers mining and processing of up to 45 million tons of ore per year. It includes measures such as raised dams and an expanded tailings storage facility.
The court imposed a large number of conditions regarding emissions to water and air, noise, dust control and consideration for reindeer herding. Boliden has operated the mine since 1968.
The case is not fully concluded. Boliden must carry out further investigations on certain issues. Financial security for remediation was set at approximately 6 billion kronor.