District Metals has begun diamond drilling at the Österkälen mineral licence in central Sweden, part of its 100%-owned Alum Shale Properties.
The company said the programme will test prospective Alum Shale mineralisation linked to overlapping geophysical and geochemical anomalies identified across the property.
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District Metals plans to use geological observations and uraniferous radiometric measurements collected during drilling to guide how many holes are completed and the total metres drilled.
Drilling at Österkälen will concentrate on a MobileMT conductive anomaly that was identified in 2025.
According to the company, the geophysical feature coincides with geochemical soil anomalies that it interprets as indicating favourable Alum Shale stratigraphy.
District Metals reported that the MobileMT anomaly extends for roughly 8km and is up to 3.5km wide. It said the target area has not previously been tested by drilling.
The work at Österkälen forms part of District Metals’ approved 2026 exploration budget.
District Metals expects to drill around 5,000–7,000m across its Viken and Alum Shale properties during the year.
District Metals CEO Garrett Ainsworth said: “We are excited to have commenced our first drill programme targeting Alum Shale mineralisation in Sweden. The large conductive MobileMT anomaly at Österkälen is interpreted to represent Alum Shale and has dimensions consistent with a district-scale target.
“By integrating geophysical, geochemical and geological datasets, we have identified a high-priority target that has never been previously drill tested.
“This programme is designed to determine whether the Österkälen target hosts the characteristics of a Viken-style mineralised system while continuing to demonstrate the significant exploration upside across our Alum Shale properties.”
District Metals is a uranium-focused exploration company focused on its main asset, the Viken property in Sweden.
The company holds full ownership of the Viken deposit, which hosts what it describes as the world’s largest undeveloped uranium mineral resource estimate.
