Copperstone Resources AB has in the last two years carried out extensive core drillings, which has now been compiled into a mineral resource estimate according to the PERC-2017 standard. Viscaria's measured and measured & indicated mineral resources have increased by 43% and 23%, respectively, due to a successful conversion to a higher classification. This could secure the Viscaria mine's future production by another 3-4 years (with an annual milled volume of 3 Mton with 30,000 tons of copper in concentrate as the final product), which is intended to be verified in the continued work.

In total, the Company's mineral resource has increased to 93 Mton, which corresponds to an increase of 26 percent since November 2020 and almost 80% since the acquisition of Viscaria in 2019. The total copper tonnage in Viscaria has increased to 817.7 Kton (excluding the existing tailings dam), which is a significant increase from 609 Ktons at the Viscaria acquisition in 2019 and 727.4 Ktons at the last mineral resource upgrade in November 2020.