Announcement • 10h
NexGold Mining Corp. Provides Update on Key Development Activities At the Goldboro Gold Project in Nova Scotia
NexGold Mining Corp. provided an update on the advancement of key development activities at its 100%-owned and fully permitted Goldboro Gold Project in Nova Scotia (“Goldboro” or the “Project”). NexGold has been actively implementing the Mutual Benefits Agreement (“MBA”), signed in 2024 with the Assembly of Nova Scotia Mi'kmaw Chiefs (“ANSMC”), through the established Implementation Committee, which met multiple times in 2026. Per the MBA, the Committee includes representatives from Kwilmu’kw Maw-klusuaqn, ANSMC and NexGold. In addition to regularly scheduled meetings, the Committee has facilitated a Wellness Advisory Committee meeting and webinar for all Chiefs and Councils, as well as multiple Mi’kmaw community meetings. Since 2022, NexGold has been implementing its Community Benefits Agreement with the Municipality of the District of Guysborough through ongoing initiatives such as regular council updates, quarterly meetings with the Community Liaison Committee, school bursaries, and community investments. The Company hosted a series of local open houses and information sessions in late May 2026 and intends to continue hosting such events going forward. All major provincial and federal permits for the Project have been obtained, including the Environmental Assessment (2022), Mineral Lease (2024), Crown Land Lease and Licence (2024/2025), Schedule 2 Amendment (2025), Industrial Approval (2025), and Fisheries Act Authorization (2025). In 2026, the NexGold team has advanced work to meet pre-construction permit conditions on schedule and is finalizing plans related to Wetland Compensation, Fisheries Offsetting and Compensation, and Biodiversity and Land Offsetting. Fisheries Offsetting programs are expected to commence in 2026, in advance of construction. An updated Feasibility Study for Goldboro is a key item that is expected to support ongoing project development activities, including the Company’s previously announced non-binding USD 175 million letter of intent with Appian Capital Advisory Limited in respect of potential project financing, as well as to inform the Board of Directors in its consideration of a potential construction decision. The Company currently anticipates completion of the updated Feasibility Study by the end of Third Quarter 2026. The Company and its consultants made significant progress on the updated Feasibility Study during April and May 2026, including: Completed wireframes and continued geological modelling to support the Feasibility Study, including an additional 58,008 metres of diamond drill core from 329 drill holes completed since the previous Mineral Resource Estimate; Advanced development of revised capital and operating cost estimates, Project execution plan and overall project schedule; Completed a geotechnical drilling and test-pit program designed to support and augment existing data required for detailed mine infrastructure, pit slopes, foundations, and tailings related infrastructure design. This program included drilling an additional 66 geotechnical holes (1,738 metres) and 154 test-pits and auger holes, as well as completing seismic and soil resistivity geophysical surveys at the process plant, and an Electrical Resistivity Tomography survey at the Tailings Management Facility; Completed acid rock drainage modelling that incorporated an additional 146 characterization samples and 5,027 geochemical analyses to support acid rock drainage estimation throughout the deposit, as well as detailed materials handling studies; Continued to advance engineering for the Process Plant and associated infrastructure, including development of Process Flow Diagrams, Piping & Instrumentation Diagrams, 3D models, equipment specifications, Electrical Single Line Diagrams, and multi-day Hazard and Operability review;Continued to advance engineering for site earthworks and roads; Evaluation of multiple vendor/contractor quotations to support development of the updated capital cost estimate for mechanical equipment packages, electrical equipment packages, building packages, and construction contracts; Completed a water well drilling program designed to support and augment existing data required for detailed ground water quality and flow characteristics prior to construction and for monitoring throughout the mining operations. This was a requirement of the Industrial Approval. The program includes drilling and testing on 30 additional wells (total of 500 metres). NexGold has drilled 120 wells to date; Initiated development of an updated Mine Plan; Substantially completed an Autonomous Haul Study; and Commenced design updates for the Tailings Management Facility. In April and May 2026, the Company and its engineering consultants commenced and advanced various detailed engineering and technical activities at Goldboro, including:Advanced detailed engineering to support the Early Earthworks contract and the Employee Accommodations Facility contract Requests for Proposals (“RFPs”). The start of early earthworks construction is tentatively scheduled for September 2026;Advanced detailed engineering for the Process Plant area and the non-process infrastructure areas; Prepared the technical documentation required to support equipment procurement packages for the two longest delivery time items, including the main substation and the power transformers. Technical documentation for other long lead equipment to follow shortly; Engaged Pinnacle Logistics Solutions to develop a logistics and materials management plan for the Project; and Received the draft Facilities Study for the new 69 kV powerline to the Project site from Nova Scotia Power. Early contracting and procurement activities in April and May 2026 at Goldboro included: Issued RFPs for the Early Earthworks contract and the Employee Accommodations Facility contract; Issued an RFP for a site services contract; andEight (8) additional RFPs for site services contracts are in various stages of development and will be issued to bidders shortly. Exploration at Goldboro continued to advance through April and May 2026. The Company’s exploration activities included: In late March 2026, the Company launched a 30,000-metre reverse circulation infill drill program targeting the first few years of planned production where it is currently accessible by drill rig. This drill program is intended to increase data-density in these target areas and may support the potential upgrading of Mineral Resource classifications. The Company will provide assay results from the drill program as they become available. Initiated two (2) geophysical surveys in May 2026 – a 2,496-line kilometre airborne Versatile Time Domain Electromagnetic survey and a 2,656-line kilometre FALCON® fixed-wing airborne gravity gradiometer survey over 32,007 hectares (~320 km) of prospective exploration land at the Project .