Shares of Allied Critical Metals (CSE: ACM) surged on Thursday following the announcement of a major resource upgrade for its Borralha tungsten project in Portugal. The company revealed that the total resource at Borralha now stands at 13 million tonnes grading 0.21% WO₃ (tungsten trioxide) in the measured and indicated category, alongside 7.7 million tonnes grading 0.18% WO₃ in the inferred category. The update includes data from Phase 1 drilling conducted this year, focusing on the Santa Helena Breccia zone with 4,210 metres of drilling.
This new estimate marks a significant improvement over the 2024 resource update, especially in the higher-confidence measured and indicated (M+I) category, which grew from just under 5 million tonnes to the current 13 million tonnes at the same grade. The inferred resource also saw an increase of 600,000 tonnes, though at a slightly lower grade.
CEO Roy Bonnell described the updated resource as a “major milestone” for the Borralha project, calling it one of “Europe’s most compelling tungsten assets.” He highlighted the project’s continued success in producing record tungsten intercepts and expressed confidence in its future expansion. “With our next core drilling campaign set for early 2026, we are optimistic about further developments,” Bonnell stated.
The Borralha project covers a 3.8-square-kilometre land package with a rich production history on its northern side. Between 1904 and 1985, the site produced over 10,280 tonnes of wolframite concentrate with an average grade of 66% WO₃.
Looking ahead, Allied Critical Metals plans to complete a Preliminary Economic Assessment (PEA) for Borralha in the first quarter of 2026, coinciding with the expected completion of environmental and permitting processes. The company also holds the Vila Verde tungsten-tin project, located 45 km south of Borralha, which boasts a historical inferred resource of 7.3 million tonnes.
Following the announcement, shares of Allied Critical Metals climbed 6.8%, bringing the company’s market capitalization to C$80.8 million ($57.3 million).









