Ero Copper Intercepts 105 Meters at 1.54% CuEq¹ at Furnas Copper-Gold Project – Successfully Completes Phase 1 Drill Program

Core Viewpoint - Ero Copper Corp. has successfully completed its Phase 1 drill program at the Furnas Copper-Gold Project, revealing significant down-dip mineralization and extending known limits, which positions the project as a potential large-scale, high-grade underground mining operation [1][4][6]. Group 1: Drill Program Details - The Phase 1 drill program consisted of 28,000 meters, with results received for approximately 10,000 meters, demonstrating continuity and extending mineralization to a maximum depth of 730 meters [1][2]. - Only one of the 66 holes drilled did not intercept mineralization, indicating a high success rate in the drilling campaign [2]. - The program included infill drilling to confirm high-grade mineralization continuity and step-out drilling to extend known mineralization limits [2][4]. Group 2: Mineral Resource Estimates - The current NI 43-101 mineral resource estimate is based on historical drilling averaging 300 meters in depth, with a maximum localized depth of 580 meters [1][6]. - The indicated mineral resource is estimated at 35.2 million tonnes grading 1.04% copper and 0.69 grams per tonne gold (1.36% CuEq), while inferred resources total 61.3 million tonnes grading 1.06% copper and 0.63 grams per tonne gold (1.36% CuEq) [14]. Group 3: Future Plans - The company is advancing to a Phase 2 drill campaign, expected to comprise a minimum of 17,000 meters, with a greater focus on step-out drilling [5][6]. - The complete results from the Phase 1 program will inform an updated NI 43-101 mineral resource estimate and a preliminary economic assessment (PEA) scheduled for completion in the first half of 2026 [6][9]. Group 4: Project Location and Infrastructure - The Furnas Project is located in the Carajás Mineral Province in Pará State, Brazil, approximately 50 kilometers from Vale Base Metals' Salobo operations and 190 kilometers from Ero's Tucumã Operations [7][8]. - The project area covers approximately 2,400 hectares and is near extensive regional infrastructure, including paved roads and a power substation [8]. Group 5: Partnership and Agreements - In July 2024, Ero Copper signed an earn-in agreement with Salobo Metais S.A., a subsidiary of Vale Base Metals, to earn a 60% interest in the project by completing exploration and development milestones over five years [9][35].