Val-d’Or, September 29, 2021 – O3 Mining Inc. (TSX.V: OIII; OTCQX: OIIIF) ("O3 Mining" or the "Corporation") has presented the major milestones of its Marban Project set to be in production by 2026 to the citizens in the surrounding area.  

Residents of the Dubuisson neighbourhood attended two information meetings held on September 29 at the Maison du Citoyen de Dubuisson. In addition, both sessions were broadcasted live on the company’s Facebook page to accommodate more residents in the area. 

The Marban project, located on the border of the cities of Val-d'Or and Malartic, will begin its Pre-Feasibility Study ("PFS") following a positive Preliminary Economic Assessment ("PEA") released on September 08, 2020. O3 Mining is working to establish the technical and economic viability of the project.

In addition to presenting the work in progress and the steps to come, the meetings provided an opportunity to listen to the citizens and identify their concerns regarding the Marban project.

The Corporation is committed to actively engaging in early dialogue with the community and to demonstrate its commitment to being a responsible citizen that is receptive to the needs and concerns of residents.

Jose Vizquerra, President and CEO of O3 Mining, stated, "I am pleased with the participation of the citizens at this first information meeting. We look forward to continuing the dialogue and working collaboratively with our host communities.”

About O3 Mining Inc.

O3 Mining Inc., an Osisko Group company, is a gold explorer and mine developer on the road to produce from its highly prospective gold camps in Québec, Canada. O3 Mining benefits from the support, previous mine-building success, and expertise of the Osisko team as it grows towards being a gold producer with several multi-million ounce deposits in Québec.

O3 Mining is well-capitalized and owns a 100% interest in all its properties (137,000 hectares) in Québec. O3 Mining trades on the TSX Venture Exchange (TSX.V: OIII) and OTC Markets (OTCQX: OIIIF). The Corporation is focused on delivering superior returns to its shareholders and long-term benefits to its stakeholders. Further information can be found on our website at https://o3mining.com 

For more information or to request an interview, please contact:

Communications Coordinator
Arianne Bilas
abilas@o3mining.com
Telephone: +1 (416) 559-1229