Osisko Metals Incorporated announced additional drilling results from the Gaspé Copper Project, located in the Gaspé Peninsula of Quebec. Twelve of the eighteen holes being reported were collared on the periphery of the existing Mount Copper open pit and utilized controlled directional drilling techniques, including one long drill hole that was flattened at shallow dips to crosscut the higher-grade mineralization below the existing open pit. Drill hole 30-1005, drilled at shallow angle towards the northwest under the existing pit, intersected 1011.0 metres grading 0.46% Cu, 3.19 g/t Ag, and 0.02% Mo, including a higher-grade intersection in the core of the deposit of 312.0 m grading 0.76% Cu, 4.79 g/t Ag and 0.04% Mo.

The true horizontal width of the modelled mineralized shell in this area is 924 metres. This long directional hole matched the limits of the modelled mineralized envelope but exceeded the expected copper grades. Drill hole 30-984A was collared on Mount Copper and intersected 235.5 metres grading 0.43% Cu, 2.98 g/t Ag, and 0.04% Mo.

This hole extended mineralization by 180.0 metres beyond the lower limit of the modelled mineralized shell. Drill hole 30-997 was collared on the eastern margin of the existing pit and intersected 567.0 metres grading 0.25% Cu, 1.90 g/t Ag, and 0.01% Mo. This hole matched the limits of the modelled mineralized shell.

Drill hole 30-1000A, collared outside the mineralized shell on the eastern margin of the pit, intersected 399.0 metres grading 0.28% Cu, 1.61 g/t Ag, and 0.03% Mo. This hole extended mineralization by 260.0 metres beyond the lower limit of the modelled mineralized shell. Drill hole 30-1001, collared outside the mineralized shell on the eastern margin of the pit, intersected 330.5 metres grading 0.34% Cu, 2.32 g/t Ag, and 0.03% Mo.

This hole matched the limits of the modelled mineralized shell. Drill hole 30-1012, collared outside the mineralized shell on the northern margin of the pit, intersected 238.0 metres grading 0.51% Cu, 3.43 g/t Ag, and 0.02% Mo. This hole was stopped within the modelled mineralized shell as historical drill data is available at depth to the lower limit of the shell.

Drill hole 30-1020, collared on the southern margin of the pit within the modelled mineralized shell, intersected 601.5 metresgrading 0.34% Cu, 1.34 g/t Ag, and 0.02% Mo. This hole extended mineralization by 175.0 metres beyond the lower limit of the modelled mineralized shell. Drill hole 30-1021A, collared on the southwestern margin of the pit within the modelled mineralized shell, intersected 138.7 metres grading 0.43% Cu and 1.22 g/t Ag (<0.01% Mo), followed by an additional deeper intersection of 366.0 metres grading 0.25% Cu, 1.82 g/t Ag, and 0.03% Mo.

This hole extended mineralization by 200.0 metres beyond the lower limit of the modelled mineralized shell. Intersections marked with an asterisk in the above table extended mineralization beyond the 2022 MRE block model and hence may add to the next resource estimate update. Intersections of less than 10 metres are not reported.

The maximum internal dilution of reported intersections is 5.0 metres. The start of mineralization in many of the holes is relatively deep as they were collared well outside the block model envelope (modelled mineralized shell) in order to reach desired targets within the model. DDH 30-996A was collared on the eastern margin of the pit, outside of the block model, and failed at a depth of 108 metres.

The pit-constrained Inferred Mineral Resource Estimate (“MRE”) established that mineralization extends well beyond the existing Mount Copper open pit. The results in the tables herein help to confirm the historical assays and provide closer drill spacing in preparation for upcoming economic studies. Eight of the eighteen drill holes have extended mineralization beyond the current modeled pit shell used for the MRE.

The porphyry copper-style stockwork mineralization at Mount Copper is characterized by widespread, continuous copper mineralization radiating from the central primary source of mineralizing fluids, i.e. the Mount Copper porphyry intrusion located at depth. Metal grades tend to decrease further away from the source, very gradually, leaving abundant lower-grade mineralization surrounding the center of the system. Economic factors detailed in the MRE have changed since the historical mine was closed such that drill results on the margin of the pit are generally above the proposed cut-off grade of 0.16% Cu.