First Mining Gold Corp. announced the confirmation of a new gold zone based on initial results from its Phase I exploration drilling program at the Duparquet Gold Project (Duparquet Project or the Project) located in Quebec, Canada. Recent drilling at the Project occurred at the newly modeled Buzz Zone which intersected 6.52 g/t Au over 4.6 m and 1.19 g/t Au over 10.4 m in drill hole DUP23-002, and 4.94 g/t Au over 1.00 m as well as 2.16 g/t Au over 1.50 m in drill hole DUP23-003, confirming a newly modeled gold zone targeted proximal to the South Beattie Syenite contact.

In addition, results from drill hole DUP23-001 returned 2.28 g/t Au over 5.05 m, and drill hole DUP23-002 returned 8.70 g/t Au over 3.3 m, validating wireframes for the existing resource. Drilling Highlights: Initial drilling campaign at the Duparquet Project since acquisition confirms new gold zone; Buzz Zone intercepts of 6.52 g/t Au over 4.6 m, 1.19 g/t Au over 10.4 m, 4.94 g/t Au over 1.0 m and 2.16 g/t Au over 1.5 m; Additional intercepts in areas of geologic and wireframe validation which include 8.70 g/t Au over 3.3 m and 3.47 g/t Au over 7.75 m; Continued demonstration of a sizeable and growth-enabled gold system in one of Canada's largest undeveloped gold projects. The Phase I drilling program commenced in May 2023 and is focused on validating, de-risking and unlocking exploration opportunities at the Duparquet Project, which has seen limited exploration since 2013.

First Mining's initial campaign is the first to be conducted within its newly consolidated and wholly owned mineral tenure at Duparquet, which now spans 19 km of strike length of the prolific Destor-Porcupine Fault Zone in the Abitibi Greenstone Belt. The newly modeled "Buzz Zone" occurs immediately south of the existing Duparquet mineral resource, which includes a combined pit and selective underground mining scenario with additional tailings resource, and which is currently estimated at 3.4 million ounces of gold in the Measured & Indicated category, grading 1.55 g/t Au, and an additional 1.6 million ounces of gold in the Inferred category, grading 1.36 g/t Au. Recent drilling by First Mining targeted a new potential zone surrounding a historical drill intercept (1.77 g/t Au over 30 m in drill hole B09-40, including 2.38 g/t Au over 4 m, 7.44 g/t Au over 3 m and 5.72 g/t Au over 2 m), with a recognized potential for significant expansion with confirmation of continuity.

First drilling by the Company at the Buzz Zone included two drill holes totalling 1,395 meters which demonstrate new mineralization over a strike length of 240 m which remains open in all directions.