Mr. Tim Johnson reports

GRANITE CREEK COPPER RECEIVES FINAL METALLURGICAL RESULTS DEMONSTRATING 88% OXIDE COPPER RECOVERY

Granite Creek Copper Ltd.'s significantly increased recovery of copper from oxide material at its Carmacks copper-gold-silver project was achieved through metallurgical studies conducted by Kemetco Research Inc.

The Company's 2023 Preliminary Economic Assessment ("2023 PEA") for the Project identified the opportunity to significantly increase net present value ("NPV") by improving oxide recovery. Metallurgical testing completed on the project in support of the 2023 PEA showed that while a copper recovery of over 93% could be achieved via a well-established froth flotation technique for sulphide ore, only 39.8% copper recovery from oxide ore was achieved using the same process (see Table 1 for summary of flotation results). The current test results show a total recovery of 88% for oxide material is possible, an increase of 48% over the PEA base case (Tables 1 and 2). These results will have a significant impact on the economics for the project as the PEA identified an additional $180 M of NPV5% value by increasing life of mine average recovery for copper from 64% to 77%. With sulfide recoveries of 93.7% identified in the PEA and combined oxide recoveries (initial flotation + leaching and precipitate) of 88% the potential recoveries for copper are well above the 77% target level highlighted in the 2023 PEA.

The current mine plan as outlined in the 2023 PEA contemplates processing material with a high oxide content of up to 80% oxide ore in the first five years of the mine life. During this time over 8.4 million tonnes of oxide material would be processed versus 2.88 million tonnes of sulphide material. An increase in recovery of oxide material for the first five years of mine life, as demonstrated in these test results, would have a potentially very significant impact on project economics.

Kemetco Research Inc. was retained to complete testing on tailings produced in previous metallurgical work to develop a process for treating material that will have passed through the mill and still have significant oxide copper minerals present (See Figure 1 for simplified flow sheet). This laboratory test program showcased the efficacy of copper recovery from Carmacks copper oxide flotation tailings through a low-concentration acid leach at ambient temperature and pressure followed by chemical precipitation of copper minerals. The precipitation of copper sulphide ("CuS") from the resulting leachate was shown to be an effective method of fully recovering the leached copper from solution, yielding a very high-grade CuS precipitate that would be added to the copper concentrate further increasing the copper grade of the high-quality concentrates from the project. For reference the PEA estimated an average concentrate grade of 40% copper with significant gold and silver credits.

Figure 1: Simplified Flow Sheet

Results of this testing are outlined below:Acid leaching was able to extract as much as 80% of the remnant copper present in a composite prepared from Carmacks copper oxide flotation tailings.Copper in precipitates varied, but in most tests approached the theoretical grade of pure CuS which grades 66.5% Cu. High grades were obtained without pH adjustment.This testing shows a total copper recovery from oxide material of 88% with Initial Flotation recovery of 39.8% + Leach and Precipitate recovery of 48% (80% of the remnant copper).Adding Sodium hydrosulphide ("NaHS") solution resulted in up to 100% precipitation of copper from leach solutions, offering a promising avenue for further refinement. Hydrogen sulphide gas was equally effective as a sulphide source for copper precipitation.In all tests, the precipitation of CuS resulted in a drop in pH as free acid was regenerated as a by-product of the precipitation reaction, creating the potential to reuse/recycle the regenerated acid.

Sulphide flotation testing completed by SGS prior to PEA study see news release dated January 10, 2023.Oxide flotation testing completed by SGS prior to PEA study see news release dated January 10, 2023.Calculated LOM average recovery based on a regression curve dependant on oxide content.Projected PEA target based on achieving a 20% increase in oxide recovery LOM.

Based on a recovery of 93.7% for sulphide and 88% for oxide this would exceed the PEA LOM 77% targetAbout the Carmacks Deposit:The road accessible Carmacks deposits hosts a NI 43-101 resource consisting of 36.2 Mt M&I, grading 1.07% CuEq 0.81% Cu, 0.31 g/t Au, 3.41 g/t Ag (see news release January 19, 2023). The deposit was the subject of a positive PEA released in January 2023 that envision a 9-year mine life based on a mill capable of processing 7,000 t/d of combined oxide and sulfide ore. The resources are contained within three conceptual open pits and are open for expansion. Contained Copper in Measured and Indicated Resources147 Pit 280 Mlbs copper in oxide 126 Mlbs copper in sulfide2000 Pit 10.5 Mlbs copper in oxide51.3 Mlbs copper in sulfide1213 Pit 35.4 Mlbs copper in oxide122.3 Mlbs copper in sulfide

Tim Johnson, President & CEO stated, "The 2023 PEA, a major milestone for the Company, identified several opportunities for the Project including increased recovery, resource expansion and additional mine and process optimisation. The unlocking of additional value through the improved oxide recovery that this testing represents, especially in the early years of mine life, has the potential to add significantly to the NPV of the project. These results could allow for re-evaluation of resources that didn't make it into the mine plan due to lower grades or assumed recoveries. The process being developed by the company also has the possibility of being used in other parts of the Minto Copper belt where oxidized or partially oxidized (POX) copper ores have not been processed by other operators."

Corporate Update

Granite Creek announces the appointment of Susan Henderson as Corporate Secretary. In this role, Ms. Henderson will play a crucial role in overseeing and managing corporate governance matters, ensuring compliance with regulatory requirements, and serving as a key liaison between the company and its stakeholders. She brings her extensive experience in the mining industry, making her well-suited to contribute to Granite Creek's continued success. The board and executive team are confident in her ability to navigate the complex landscape of corporate governance and provide valuable insights.

Qualified Persons

Mr. Douglas Warkentin, P.Eng., a Qualified Person for the purposes of National Instrument 43-101, has reviewed and approved the technical disclosure related to metallurgical testing contained in this news release. Mr. Warkentin is a Senior Metallurgist with Kemetco Research and an advisor to the Company.

The NI 43-101 technical report entitled CARMACKS PROJECT PRELIMINARY ECONOMIC ASSESMENT (PEA) YUKON, CANADA, referenced in this news release is available on the company's website as well as on SEDAR under the company's profile.

2023 PEA: The Company cautions that the results of the PEA are preliminary in nature and do not include the calculation of mineral reserves as defined by NI 43-101. There is no certainty that the results of the PEA will be realized.

About Granite Creek Copper

Granite Creek Copper, a member of the Metallic Group of Companies, is a focused on the exploration and development of critical minerals projects in North America. The Company's projects consist of its flagship 176 square kilometer Carmacks project in the Minto copper district of Canada's Yukon Territory on trend with the high-grade Minto copper-gold mine and the advanced stage LS molybdenum project and the Star copper-nickel-PGM project, both located in central British Columbia. More information about Granite Creek Copper can be viewed on the Company's website at www.gcxcopper.com.

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