Allied Critical Metals Inc. has released the results of an initial Preliminary Economic Assessment (PEA) for its 100%-owned Borralha Tungsten Project in northern Portugal, outlining an underground development concept with strong returns across multiple tungsten price scenarios and a fully funded drilling campaign aimed at expanding resources beyond the initial mine plan.
In the study’s medium case using a tungsten price of USD 1,000/mtu WO₃, the project delivers an after-tax NPV(8%) of C$473.4 million (USD 346.6 million) and an after-tax IRR of 48.8%, with an estimated payback period of 4.2 years. Under the base case aligned with an Argus long-term average price assumption of roughly USD 704/mtu WO₃, the after-tax NPV(8%) is C$182.7 million (USD 134.0 million) and the after-tax IRR is 27.2%, with a payback of 5.8 years. A high-price sensitivity case at USD 1,500/mtu WO₃ increases the after-tax NPV(8%) to C$963.8 million (USD 706.4 million) and the IRR to 78.4%, shortening payback to 3.2 years.
The PEA estimates initial capital at approximately USD 91 million (C$124.2 million) and sustaining capital at about USD 87 million (C$118.8 million), for total life-of-mine capital of roughly USD 178 million (C$243.1 million). The mine plan covers an 11-year operating life, based on the Santa Helena Breccia deposit, with a nominal processing rate of 1.4 million tonnes per annum and average mill feed grade of about 0.20% WO₃. Average annual recovered production is estimated at approximately 1,708 tonnes WO₃, with peak annual output of 2,388 tonnes WO₃. The company reported an all-in sustaining cost estimate of around USD 303/mtu WO₃.
Allied said the economic model was built on conservative design assumptions, including mine design and cut-off grade selection developed using USD 659/mtu WO₃. The company highlighted that reported spot market pricing for tungsten has recently been materially higher than the study’s sensitivity cases.
The company also reported several de-risking milestones and strategic positioning factors. Borralha has received a favourable Environmental Impact Declaration (DIA) from Portugal’s environment agency, subject to standard regulatory conditions, and the project has been endorsed by idD Portugal Defence as a strategic initiative of national importance.
To support growth beyond the initial 11-year plan, Allied has begun a fully funded 20,000-metre drill program targeting resource expansion, conversion of inferred material into higher-confidence categories, potential mine life extension, and possible throughput and scale optimisation. The PEA does not include Allied’s other tungsten project at Vila Verde.
