G Mining Ventures Provides Tocantinzinho Project Update on Anniversary of Construction Decision

TSXV: GMIN
OTCQX: GMINF

All amounts are in USD unless stated otherwise

• Project remains on track and on budget for commercial production in H2-2024
• Total project progress of 51% with construction 46% complete
• Updated virtual site tour available through VRIFY platform

BROSSARD, Sept. 12, 2023 - G Mining Ventures Corp. ("GMIN" or the "Corporation") (TSXV: GMIN) (OTCQX: GMINF) is pleased to provide an update on progress made at GMIN's 100% owned Tocantinzinho Gold Project ("TZ" or the "Project") currently under construction in the State of Pará, Brazil. On the one year anniversary since the Corporation made a formal construction decision (announced on September 12, 2022), the Project is 51% complete and remains on track and on budget for commercial production in H2-2024.

Recent Highlights (All updates are dated as of August 31^st, 2023, unless stated otherwise.)

• Health & Safety - A total of 2,800,142 man-hours have been worked on the Project to date with no Lost Time Incidents, including a Total Recordable Incident Rate (TRIFR) of 0.36.
• Budget - Total spend to date of $281 million with open commitments of $82 million for a total committed to date of $363 million (79% of project total) and are tracking in line with the Feasibility Study (defined hereafter).
• Schedule -Total Project is currently 51% complete and trending on time for commercial production in H2-24. Procurement and detailed engineering are effectively complete.
• Construction Progress - Construction is 46% complete, with work initiated on almost all Project areas.
• Pre-production Mining - Pre-production mining activities have reached 33 thousand tonnes ("kt") per day ("pd") and have been operating on a 24/7 basis since the start of night shifts in May. A total of 4.8 million tonnes ("Mt") of material has been excavated from the starter pit.
• Powerline - Since initiating works in December 2022, construction of the 193-km 138 kV transmission line from Novo Progresso to TZ is advancing quickly. Total progress has reached 78% and is trending on schedule and on budget for completion in early H1-24.
• Operational Readiness - Operational readiness activities are underway with the construction and pre-production mining teams poised to transition into commissioning and operations.
• Human Resources - 2,220 employees and contractors are currently employed by the Project with 95% of the workforce comprised of local Brazilians.
• Exploration - Carlos Bertoni, former CEO of Reunion Gold Corporation (RGD.V) has been engaged as Technical Advisor to the GMIN exploration team.

Tocantinzinho Project Update

The Project remains on track and on budget for commercial production in H2-2024.

Updated satellite imagery and 360 photography showing the site progress is available through the corporate presentation at: https://vrify.com/decks/14169. A 3D presentation of the Project Feasibility Study is available at: Feasibility Study 3D VRIFY Presentation. Both presentations can be accessed by visiting GMIN's website at https://www.gminingventures.com.

Timetable and Next Steps

Upcoming key milestones include:

• Completion of the powerline construction in Q1-24
• Process plant commissioning commence in Q2-24
• First gold pour in Q2-24; and
• Commercial production in H2-24.

Update Photos

Louis-Pierre Gignac, President & Chief Executive Officer of GMIN, a QP as defined in NI 43-101, has reviewed the press release on behalf of the Corporation and has approved the technical disclosure contained in this press release.

G Mining Ventures Corp. (TSXV: GMIN) (OTCQX: GMINF) is a mining company engaged in the acquisition, exploration and development of precious metal projects, to capitalize on the value uplift from successful mine development. GMIN is well-positioned to grow into the next mid-tier precious metals producer by leveraging strong access to capital and proven development expertise. GMIN is currently anchored by its flagship Tocantinzinho Gold Project in mining friendly and prospective State of Pará, Brazil.

For further information on GMIN, please visit the website at www.gminingventures.com

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this press release.

Cautionary Statement on Forward-Looking Information

All statements, other than statements of historical fact, contained in this press release constitute "forward-looking information" and "forward-looking statements" within the meaning of certain securities laws and are based on expectations and projections as of the date of this press release. Forward-looking statements contained in this press release include, without limitation, those related to (i) the Project remaining on track and on budget for commercial production in H2-2024; (ii) the Project commitments to track in line with the Feasibility Study; (iii) the power transmission line to be completed in early H1-2024; (iv) the cyanide tailing storage facility to be completed in Q4-2023 and the flotation tailing storage facility to be completed in Q1-2024; (v) the stockpiling of ore for commissioning activities to commence in Q4-2023; and (vi) more generally, the horizontal bar chart entitled "Project Development Timeline" as well as the sections entitled "Timetable and Next Steps" and "About G Mining Ventures Corp.".

Forward-looking statements are based on expectations, estimates and projections as of the time of this press release. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable by the Corporation as of the time of such statements, are inherently subject to significant business, economic and competitive uncertainties and contingencies. These estimates and assumptions may prove to be incorrect. Such assumptions include, without limitation, those relating to the price of gold and currency exchange rates, those outlined in the Feasibility Study and those underlying the items listed on the above section entitled "About G Mining Ventures Corp.".

Many of these uncertainties and contingencies can directly or indirectly affect, and could cause, actual results to differ materially from those expressed or implied in any forward-looking statements. There can be no assurance that, notably but without limitation, the Corporation will (i) continue to progress on all fronts at the Project, to carry the self-perform approach with similar success as proven in the past and to continue taking care of the health and safety of all its stakeholders (with no Lost Time Incidents), (ii) keep its expenditures and schedule in line with the Feasibility Study, (iii) carry its next steps as per the above timetable and effect the transition to commercial production as contemplated, (iv) complete the transmission line in H1-2024 and bring the Project into commercial production in the H2-2024, or at all, (v) advance TZ into one of the largest operating gold mines in Brazil, or (vi) use TZ to grow GMIN into the next intermediate producer, as future events could differ materially from what is currently anticipated by the Corporation. In addition, there can be no assurance that (y) the Corporation's comprehensive regional exploration soil sampling program, its regional airborne campaign and its other exploration activities will generate positive results and led to the addition of mineral resources; and (z) the State of Pará, in Brazil, will remain a mining friendly and prospective jurisdiction.

By their very nature, forward-looking statements involve inherent risks and uncertainties, both general and specific, and risks exist that estimates, forecasts, projections and other forward-looking statements will not be achieved or that assumptions do not reflect future experience. Forward-looking statements are provided for the purpose of providing information about management's expectations and plans relating to the future. Readers are cautioned not to place undue reliance on these forward-looking statements as a number of important risk factors and future events could cause the actual outcomes to differ materially from the beliefs, plans, objectives, expectations, anticipations, estimates, assumptions and intentions expressed in such forward-looking statements. All of the forward-looking statements made in this press release are qualified by these cautionary statements and those made in the Corporation's other filings with the securities regulators of Canada including, but not limited to, the cautionary statements made in the relevant sections of the Corporation's (i) Annual Information Form dated April 28, 2023, for the financial year ended December 31, 2022, and (ii) Management Discussion & Analysis. The Corporation cautions that the foregoing list of factors that may affect future results is not exhaustive, and new, unforeseeable risks may arise from time to time. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements or to explain any material difference between subsequent actual events and such forward-looking statements, except to the extent required by applicable law.

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SOURCE G Mining Ventures Corp.