Gold Terra contracts SLR for PEA on Con Mine and Crestaurum, Yellowknife

VANCOUVER, BC / ACCESS Newswire / June 15, 2026 / Gold Terra Resource Corp. (TSXV:YGT)(Frankfurt:TX0)(OTCQB:YGTFF) (" Gold Terra " or the " Company ") is pleased to announce the Company has engaged SLR Consulting (Canada) Ltd ("SLR") to complete a Preliminary Economic Assessment ("PEA") prepared in accordance with NI 43-101 to assess the potential of Con Mine property and its future development potential, which includes the Yellorex area, Zone 103N, and also the gold content in the historical tailings. In addition, the PEA will also include the development of a satellite deposit, Crestaurum, located approximately 20 kilometres northwest of Yellowknife, NWT and part of the Yellowknife Project ("YP"), The PEA has already started and is currently anticipated to be completed in December 2026, with the objective of completing all the necessary studies to a level of a pre-feasibility study (PFS) and to position the project toward the short form permitting process, including a new Mine Plan, progressive remediation and a future Closure Plan. This engagement represents a key milestone in the Company's growth strategy, as the PEA is expected to provide a good foundation for the potential future development of the project.

Chairman and CEO, Gerald Panneton, commented, "The PEA study is the major step towards bringing the project towards possible development and potential future production. The PEA is to be based on the recent May 15, 2026 press release announcement on adding 595,000 Inferred ounces within 5.1 million tonnes grading 3.64 g/t gold on the 103N zone, and the updated mineral resource study due in September 2026, with the addition of almost 20,000 metres of drilling unaccounted for. After spending nearly C$ 19 million in drilling, we look forward to the potential restart of the historic Con Mine once the purchase is completed (see news release November 22, 2021 )." SLR was selected based on its extensive experience in mining engineering, mineral economics, and project development.

SLR recently completed an updated 2026 Mineral Resource estimate on the Yellorex, Zone 103N, and Crestaurum deposits, all part of its YP(refer to the May 15, 2026 press release ). SLR will act in capacity of Lead Consultant. SLR has retained the services of Nordmin Engineering Ltd of Thunder Bay, Ontario, to undertake some of the study scope of work, notably engineering associated with the site and mine infrastructure and the process plant.

WSP Canada Inc. (WSP), a global engineering and professional services firm, will be responsible for part of the study pertaining to the PFS of tailings storage facility and to the environmental studies, permitting, and social impact. WSP has already completed a conceptual design of a downstream tailing storage facility that is contained within the Mining Lease boundaries of the Con Mine, which seeks to simplify the project footprint without requiring additional surface rights. The technical information contained in this news release has been reviewed and approved by Joseph Campbell, a Qualified Person as defined in National Instrument 43-101 - Standards of Disclosure for Mineral Projects and Senior Technical Advisor for the Company.