La Plata Copper-Silver-Gold-PGE Project Resource Expanded

VANCOUVER - Metallic Minerals Corp. reported that the updated National Instrument 43-101 Mineral Resource Estimate is representing a 25% increase in contained metal based on an additional 1,730 meters of diamond drilling completed at its La Plata project in 2022. Inferred mineral resources at the Allard deposit now total 1,211 million pounds of copper (Mlbs) and 17.6 million ounces (Moz) of silver in a constrained model with 147.3 million tonnes at an average grade of 0.41% Copper Equivalent (CuEq) (0.37% Cu and 3.72 g/t Ag) using a 0.25% CuEq cut-off grade.

The expansion from the inaugural resource to the current 1,317 Mlbs CuEq is largely driven by the major discovery in drill hole LAP22-04 (drilled in 2022), which intersected 816 meters of 0.41% CuEq recovered (0.30% Cu, 2.47 g/t Ag, 0.038 g/t Au, 0.055 g/t Pd and 0.093 g/t Pd) bottoming in 5.39% CuEq recovered over 5.2 m (2.44% Cu, 18.7 g/t Ag, 5.0 g/t Au+PGE). Follow-up drilling is currently underway to test the extent of this newly discovered high-grade mineralization, and at the time of this news release, the first offset drill hole was drilling in porphyry mineralization and had reached approximately 500 m depth.

The Allard deposit resource remains completely open to expansion laterally and to depth. Future mineral resource estimates will add gold, platinum and palladium to the copper and silver resource with additional drilling. These metals were not previously assayed for in historic drilling but add significant value to the recent drill intercepts. Furthermore, the greater La Plata copper-silver-gold-PGE project remains underexplored and open to new discoveries of both additional copper porphyry centers, as well as high-grade epithermal silver, gold and telluride mineralization that were the focus of historic mining in the district.

Inferred mineral resources at the Allard deposit now total 1,211 million pounds of copper and 17.6 million ounces of silver in a constrained model with 147.3 million tonnes at an average grade of 0.41% CuEq (0.37% Cu and 3.72 g/t Ag) using a 0.25% CuEq cut-off grade. Contained copper equivalent metal has increased by 25% to 1,317 million pounds and the overall grade of the deposit also increased 5% to 0.41% CuEq. Significant upside exists for both increases in equivalent grade and precious metal ounces due to limited historic assaying for gold, platinum and palladium. These metals, which are found in high concentrations in the 2022 drilling but are not included in the current resource estimate, are anticipated to be added with additional drilling. The precious metals component of LAP22-04 (silver, gold, platinum, and palladium) can add 50% or more in equivalent value above the copper only values in that hole.

The Allard resource remains open to expansion at depth and along strike with the discovery drill hole LAP22-04 being the easternmost hole drilled in the deposit. Sixteen (16) untested potential porphyry centers have been identified on the greater La Plata project area, as well as target areas with potential for significant high-grade epithermal silver, gold and telluride mineralization. Resource expansion drilling in 2022 totaled 1,780 m bringing the project total to 16,930 m in 59 drill holes.

An NI 43-101-compliant technical report on the 2023 La Plata Resource will be filed on Sedar.com within 45 days.

Scott Petsel, President, said, "The current expansion of the La Plata resource is an early first step in realizing the true potential of the project and the fact that we were able to achieve a 25% increase over the inaugural resource with a modest amount of drilling in 2022 speaks to the well mineralized yet underexplored nature of the project. Hole LAP22-04 resulted in the discovery of new, extremely rich mineralization that is unconstrained to the east, north and at depth and clearly requires follow-up drilling to understand the true size and nature of the Allard resource. Metallic Minerals in collaboration with our strategic investor Newcrest Mining is excited to pursue expansion on this discovery in 2023 and have secured a drill capable of penetrating well beyond the current resource extent. The continuity of mineralization starting from surface, coupled with the very high grades at depth, represent significant upside to both scale and grade in future resource updates. We expect considerable expansion of the contained precious metals and copper with subsequent drilling and envision the potential scale for a Tier 1 asset. In addition, numerous high-priority untested targets have been identified outside of the resource area that we hope to begin testing in 2023."