O3 Mining Inc. announced that it has received all assay results from its 3,053 metre winter drill campaign at the Ludovick Sector of the Horizon Project, located seven kilometres west of the Marban and Norlartic deposits and four kilometres north-east of the Canadian Malartic open-pit owned by Agnico Eagle Mines Limited. The Corporation used one drill rig to complete the 11 drill holes comprising the campaign. Highlights: 0.8 g/t Au over 9.1 metres in hole O3HR-24-016 at a vertical depth of 233.0 metres, including 5.3 g/t over 0.5 metres on SW-1 sector; 4.5 g/t Au over 1.2metres in hole O3HR- 24-013 at a vertical depth of 131.0 metres, on SW-2 sector.

O3 Mining's initial drill program at the Ludovick Sector supports the presence of gold in two northwest-south-east trending horizons approximately 300 metres apart. Both horizons dip 70 to 80 degrees to the north-east. The second zone consists of pyrrhotite and pyrite in disseminations and stringers within sheared, biotitized, and chloritized conglomerates of the Timiskaming Group near the contact with the wackes of the Cadillac Group.

O3 Mining completed drill holes in two areas spaced about one kilometre along that trend, named SW-1 and SW-2. The gold intercepts obtained are present in a 100-metre-wide gold anomalous envelope. The mineralization within the Temiskaming Conglomerates is of particular interest because of the width of the mineralized envelope and the correlation between gold grades and the amount of sulfides. This characteristic offers the possibility to conduct a geophysical-induced polarization survey along the five kilometres trend to rapidly identify the best areas to focus on during the next drilling program.

Drill Hole Intercepts. See Table 2 below for full technical parameters. Third-party assays are submitted to other designated laboratories for 5% of mineralized samples.

Drill program design, QA/QC, and interpretation of results are performed by qualified persons employing a QA/QC program consistent with NI 43-101 and industry best practices.