Since 2010, Copperstone has owned the Arvidsjaur project in the Skellefte Mining District. The area has a long history of exploring.
The Arvidsjaur project spans over 8,000 hectares in an area where prospecting has been ongoing since the 1920s. However, it was not until the 1970s, under the management of Boliden Mining, that systematic drilling began.
The investigations resulted in 100 drill holes totaling approximately 12,000 meters. In 2004, the new owner, Lundin Mining, initiated its own investigations. The result was over 140 new drill holes totaling approximately 22,000 meters. Since Copperstone’s acquisition, an additional 25 drill holes have been added, with core samples spanning 15,000 meters. Several of these drill holes reach greater depths than in previous exploring efforts.