TORONTO - Probe Gold Inc. (TSX: PRB) ('Probe' or the 'Company') is pleased to announce positive results from the independent updated Preliminary Economic Assessment ('PEA') for its 100%-owned Novador Project (formerly known as Val-d'Or East) (the 'Project') located near Val-d'Or, Quebec.

The updated PEA provides a base case assessment of developing the Novador mineral resource by open pit and underground mining, and gold recovery with a standard free milling flowsheet, incorporating gravity and leaching of the gravity tails, with 50% estimated to be recovered via gravity. The economic model supports an operation with a high rate of return over a 12.6-year mine life, with significant average annual production of 255,000 ounces, an increase of 23% from the 2021 PEA. The updated PEA was prepared by Ausenco Engineering Canada ULC ('Ausenco') in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects ('NI 43-101'). The updated NI 43-101 PEA Technical Report will be filed on SEDAR within 45 days of this announcement.

David Palmer, President and Chief Executive Officer of Probe, states, 'Our initial goal for the Company was to discover a gold deposit capable of producing 200,000 ounces per year and we have now achieved an average of over 250,000 ounces per year, over a mine life of almost 13 years, with a resource that is still growing. From our last PEA in 2021 we have demonstrated numerous improvements: our potential production has increased by 23%, our post-tax NPV is up over 50% to $910 million, we have simplified our milling by removing ore sorting, and we have room for additional improvement in the Pre-Feasibility Study ('PFS'). Novador is a large, sustainable mining project leveraged to the gold price with a production profile capable of producing nearly 300,000 ounces per year in the first five years, marking a significant improvement over the previous PEA. To have gold production of this capacity in a safe and stable jurisdiction like Quebec distinguishes Novador as one of the pre-eminent gold development projects in the world and we see its potential in providing great benefits not only to our shareholders but also to the communities that surround it. We will continue to focus on de-risking and permitting Novador in order to add value in the most efficient and effective way possible.'

Yves Dessureault, Chief Operating Officer of Probe, states, 'This updated PEA has surpassed our expectations again and it clearly shows a robust and significant project. Following 581,000 metres of drilling and numerous technical and field studies to support robust design criteria, the project is on solid foundations. We have also integrated project elements to reduce its environmental footprint by taking advantage of its proximity to existing infrastructure. For example, the project includes rail delivery to site for reagents and consumables, electrification of open pit mining equipment (drills and shovels), backfilling of two open pits (one with waste rock and the other with tailings) and dry staking of filtered tailings. With the permitting process initiated last fall with the submission of the initial project description to the Impact Assessment Agency of Canada, we now have a better-defined project and are now ready to further engage with the provincial, federal authorities and the various stakeholders. Clearly, this project connects us with a bright future.'

Description of the Novador Project and PEA

The PEA is preliminary in nature and includes Inferred Mineral Resources considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as Mineral Reserves, and there is no certainty that the results of the PEA will be realized. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability.

The Novador Project includes the properties on the Pascalis, Monique and Courvan gold trends, which are all 100%-owned by Probe. The Project benefits from world-class mining infrastructure, expertise for underground and open-pit operations and highly qualified personnel. It can be easily reached by roads that are well maintained in all seasons. Several large-scale mining operations and gold mills (some with excess capacity) are currently active in the area. Since 1930, more than 30 million ounces of gold have been produced in the Val-d'Or mining camp.

Since 2016, Probe Gold has been consolidating its land position in the highly prospective Val-d'Or East area in the province of Quebec with a district-scale land package of 600 square kilometres that represents one of the largest land holdings in the Val-d'Or mining camp. The Novador project is a sub-set of properties totaling 175 square kilometres hosting three past producing mines (Beliveau Mine, Bussiere Mine and Monique Mine) and falls along three regional mine trends. The current total Novador resource stands at 3,793,900 ounces of gold in the Measured and Indicated category (M&I) and 1,179,400 ounces of gold in the Inferred category.

Ausenco was appointed as lead consultant in August of 2023 to prepare the updated PEA in accordance with NI 43-101 and was assisted by Moose Mountain Technical Services for the mine design.

The independent PEA was prepared through the collaboration of the following firms: Ausenco Engineering Canada ULC (Ausenco), Moose Mountain Technical Services (MMTS), InnovExplo, Knight Piesold Ltd. (KP), Richelieu Hydrogeologie Inc., Lamont Inc. and Rock Engineering Consulting Services. These firms provided mineral resource estimates, design parameters and cost estimates for mine operations, process facilities, major equipment selection, rock and tailings storage, reclamation, permitting, as well as operating and capital expenditures.

Financial Analysis

The economic analysis was performed assuming a 5% discount rate. On a pre-tax basis, the NPV5% is $1,530 million, the IRR is 34.4% and the payback period is 3.5 years. On an After-Tax basis, the NPV5% is $910 million, the IRR is 24.4% and the payback period is 4.4 years.

Cautionary Statement - The reader is advised that the updated PEA summarized in this news release is intended to provide only an initial, high-level review of the project potential and design options. The updated PEA mine plan and economic model include numerous assumptions and the use of Inferred Resources. Inferred Resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as Mineral Reserves, and there is no certainty that the results of the updated PEA will be realized. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability.

Projected gold production averages 281,000 ounces per year over the first five years and 273,000 ounces per year over the first eight years. The LOM production totals 3,210 koz and averages 255,000 ounces per year. Production will come from open pit mining in the first two years before transitioning to a combined open pit and underground operations afterwards.

Mine Design and Production Schedule

The updated PEA considers open-pit mining from Monique, Courvan, Pascalis gold trends. Underground mining is used to extract material outside of the Monique, Courvan and Pascalis open pits. Underground mining areas are accessed from surface portals and are mined concurrently with the open pits. The underground mining methods considered in this study are longhole retreat for the Monique gold trend and mechanized drift and fill for the Courvan and Pascalis gold trends.

Lerchs-Grossman (LG) pit shell optimizations are used to define the ultimate economic pit limit for each gold trend. Ultimate pit limits are then split into smaller, detailed mining phases which incorporate geotechnical feedback for berm width, bench face angles and overall angles and also include highwall ramps which are appropriately sized for the selected mining equipment. Haulage profiles are built for each destination from each phase, allowing the mining schedule program to include fleet size optimization, along with grade profile and mining rate optimizations.

Underground mining limits consider the expected processing and mining costs, with mining costs dependent upon the selected mining method. These costs are applied to the block model inside a stope optimizer program to develop mining stope areas. The stope areas are examined and small, isolated areas that would incur high development costs are removed. The remaining stopes are applied with appropriate mining loss and dilution factors. Stopes are scheduled with consideration of throughput capacities on the access ramps, ordered sequencing of stopes, timing of underground production relative to open pit production, and overall personnel requirements.

The scheduled mill feed Resources by type are as follows: 5% Measured, 72% Indicated and 23% Inferred.

The owner-operated mining fleet will utilize conventional truck and shovel methods with 16 cubic metre loaders and 135-tonne haul trucks on 12m benches. Non-mineralized material will be placed as near as possible to the pit rims to reduce haulage costs. Mineralized material will be directed to stockpiles or to the mill. Underground material is direct fed to the mill. The average mill feed head grade during the first five years is 1.67 g/t Au and is 1.30 g/t Au over the LOM.

The mining schedule considers one year of pre-production, followed by approximately 12.6 years of mill feed. The mill feed throughput is planned at 15,500 tonnes per day (tpd) for the first 5 years and then 19,200 tpd for the following 7.6 years. The mill feed is comprised of 67.9 million tonnes of open-pit material and 12.4 million tonnes of underground material. The open-pit strip ratio is 7.43 tonnes waste/tonnes mill feed. Over the mine life, total gold production is forecasted to be 2,106koz from open-pit operations and 1,104koz from underground operations.

Metallurgy and Mineral Processing

The process plant will employ gravity concentration, standard leaching with carbon-in-leach (CIL) technology for gold recovery. The process plant includes single stage crushing followed by semi-autogenous (SAG) and ball milling, classification, gravity concentration, leach and CIL, and cyanide detoxification before tailings filtration. The filtered tailings will be stored in the filtered tailing storage facility (FTSF) for the first three years. After the New Beliveau/North open pit is depleted in year 3, the tailings will bypass the filtration plant and will be then deposited as a slurry to backfill this open pit. The process plant will treat 5.66 Mt of mineralized material per year at an average throughput of 15,500 tpd until the expansion in year 6.

The process plant will be expanded in year 6 of production to increase the plant capacity to treat 7.00 Mt of material per year at an average throughput of 19,200 tpd. This will be done by adding secondary crushing, pre-leach thickening and increasing the primary grind size from 70 to 83 microns.

The mill design availability is 8,059 hours per year or 92%. The crushing design availability is 5,694 hours per year or 65%. The tailings filtration design availability is 7,183 hours per year or 84%. The process plant has been designed to realize an average recovery of 95.7% of the gold over the life of the Novador Project based on metallurgical test work completed at Base Metallurgical Laboratories Ltd. in Kamloops, British Columbia in 2022. Of this, 50% of the gold will be extracted by gravity and a further 45.7% by the leach/CIP process.

Site Location and Infrastructure

The Novador Project is located approximately 25 kilometres east of the city of Val-d'Or in the province of Quebec. The Project is in a rich mining area with easy access to power, labour, communities, highways, and a national railway adjacent to the proposed process plant.

The process plant site location selection considered various factors including social, environmental, topographic, accessibility, proximity to existing infrastructure, and overall flow of material to the FTSF. Centralized administration facilities, truck shop, wash bay, tire store, refueling station, warehousing and explosive magazine are optimized for efficient use of facilities.

Based on ongoing geochemical characterization and the geology of the various deposits, it can be considered that the waste rock, mineralized material and tailings should not be acid-generating nor leachable. These positive characteristics of the Novador Project (simplified operation, easier water management and reduced closure risks) were incorporated into its design.

Based on a technology, preliminary siting, ground condition and deposition study for the Novador Project, it was decided to filter the tailings and store them in a FTSF until the Beliveau/North open pit is depleted. Then, tailings will be deposited as slurry within the Beliveau/North open pit.

Filtered tailings are one of the most sustainable methods for storing tailings as there is no need for a dam to hold them in place or potential long-term storage issues. When dry stacking is applied, the filtered tailings (cake) will be handled using a combination of loaders, trucks and dozers to a stockpile immediately northwest of the filtering plant. The filtered tailings will be loaded into haul trucks for deposition on the FTSF, approximately 2.8 kilometres north of the process plant, by road.

When the deposition method changes to in-pit storage, the slurry will be pumped and transported by pipeline to the depleted New Beliveau/North open pit. This approach is also among the most sustainable methods for storing tailings and has the additional benefit of reducing energy consumption, lower operating cost and the backfilling of an open pit.

Runoff from the FTSF, as well as all storage facilities (rock, mineralized material and over burden stockpiles) will be collected in series of water management ponds and drainage ditches. A public road (, Chemin Perron and Chemin Pascalis) is diverted to the North and to the West and thus go around the site as indicated on the site layout.

About Ausenco:

Ausenco is a global company based across 26 offices in 14 countries, with projects in over 80 locations worldwide. Combining deep technical expertise with a 30-year track record, Ausenco delivers innovative, value-add consulting studies, project delivery, asset operations and maintenance solutions to the mining & metals, oil & gas and industrial sectors.

About Probe Gold

Probe Gold Inc. is a leading Canadian gold exploration company focused on the acquisition, exploration, and development of highly prospective gold properties. The Company is well-funded and dedicated to exploring and developing high-quality gold projects. Notably, it owns 100% of its flagship asset, the multimillion-ounce Novador Gold Project in Quebec, as well as an early-stage Detour Gold Quebec project. Probe controls a large land package of approximately 1,600-square-kilometres of exploration ground within some of the most prolific gold belts in Quebec.

Contact:

Seema Sindwani

Vice-President of Investor Relations

Tel: +1.416.777.9467

Email: info@probegold.com

Forward Looking Statements

Forward-looking statements include estimates and statements that describe the Company's future plans, objectives or goals, including words to the effect that the Company or management expects a stated condition or result to occur. Forward-looking statements may be identified by such terms as 'believes', 'anticipates', 'expects', 'estimates', 'may', 'could', 'would', 'will', or 'plan'. Since forward-looking statements are based on assumptions and address future events and conditions, by their very nature they involve inherent risks and uncertainties. Although these statements are based on information currently available to the Company, the Company provides no assurance that actual results will meet management's expectations. Risks, uncertainties, and other factors involved with forward-looking information could cause actual events, results, performance, prospects, and opportunities to differ materially from those expressed or implied by such forward-looking information. Forward looking information in this news release includes, but is not limited to, the Company's objectives, goals or future plans, statements, exploration results, potential mineralization, the estimation of mineral resources, exploration and mine development plans, timing of the commencement of operations and estimates of market conditions. Factors that could cause actual results to differ materially from such forward-looking information include, but are not limited to failure to identify mineral resources, failure to convert estimated mineral resources to reserves, the inability to complete a feasibility study which recommends a production decision, the preliminary nature of metallurgical test results, delays in obtaining or failures to obtain required governmental, environmental or other project approvals, political risks, inability to fulfill the duty to accommodate First Nations and other indigenous peoples, uncertainties relating to the availability and costs of financing needed in the future, changes in equity markets, inflation, changes in exchange rates, fluctuations in commodity prices, delays in the development of projects, capital and operating costs varying significantly from estimates and the other risks involved in the mineral exploration and development industry, and those risks set out in the Company's public documents filed on SEDAR+. Although the Company believes that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that such events will occur in the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

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