Solaris Publishes Positive Pre-Feasibility Study Results and Maiden Mineral Reserve for the Warintza Project, with Significant Mineral Resource Increase, an Extensive Mine Life, and US$4.6bn NPV

Core Insights - Solaris Resources Inc. announced the results of a Pre-Feasibility Study (PFS) for its Warintza Project, highlighting a significant increase in mineral resources and the establishment of maiden mineral reserves [2][5][28] - The Warintza Project is positioned to capitalize on a tightening copper market, with exceptional economics and a strong community support framework [4][6][20] Mineral Resource and Reserves - The updated Mineral Resource Estimate (2025 MRE) includes 3.7 billion tonnes of Measured and Indicated Resources, 2.1 billion tonnes of Inferred Resources, and 1.3 billion tonnes of Mineral Reserves [5][26] - The 2025 MRE reflects a 312% increase in Measured plus Indicated Mineral Resources compared to the 2024 MRE, with significant new mineralization identified [26][39] Economic Metrics - The project is expected to generate an average annual copper equivalent production of over 300,000 tonnes in the first five years and over 240,000 tonnes during the first 15 years [7][14] - The post-tax net present value (NPV) is estimated at US$4,617 million, with a post-tax internal rate of return (IRR) of 26% [7][29] - Initial capital costs are projected at US$3.7 billion, with a payback period of 2.6 years post-tax [7][29] Production and Operating Costs - The average All-In Sustaining Cost (AISC) is projected at US$0.85 per pound of payable copper for the first five years and US$1.07 for the first 15 years [7][29] - The project will utilize conventional open-pit mining methods, with a low strip ratio of 0.53 to 1, enhancing its economic viability [24][46] Community and Environmental Engagement - The company has established formal agreements with local Indigenous communities, ensuring shared benefits and participatory decision-making [20][21] - Solaris maintains close engagement with government authorities to facilitate permitting and environmental assessments [22][36] Infrastructure and Accessibility - The Warintza Project benefits from strong existing infrastructure, including paved highways and proximity to ports, which supports efficient transportation of materials [19][58] - The power supply for the project will be sourced from a 62.1 km overhead transmission line, ensuring adequate energy for operations [59]