Highland Copper Company Inc. announced the results of an updated feasibility study (the Feasibility Study) for its 100%-owned Copperwood project located in the Western Upper Peninsula of Michigan, U.S.A. (the Copperwood Project or the Project). Key Highlights Copperwood provides significant leverage to copper price. The updated Copperwood Feasibility Study, done in the high-cost environment of 2022, still has a robust 17.6% IRR at a copper price of $4.02 per pound.

The average yearly production of approximately 30,000 tonnes of copper provides good exposure to copper price increases. The Copperwood Project is now fully permitted. The Copperwood Project holds all key Michigan State permits required to proceed with site construction and operation.

The detailed design for stream and wetland mitigation work as per permit conditions has been completed. Importantly, an alternative process water solution incorporated in the Feasibility Study Update eliminates the need for the Section 10 Water Intake permit. Measured & Indicated tonnes increased by 10% and Inferred tonnes increased by 54%.

With updated metal price assumptions and a modified reporting cut-off, a significant increase in resource tonnes has been reflected in the 2023 mineral resource estimate relative to the 2018 mineral resource (Copperwood Feasibility Study dated effective June 14, 2018, posted to SEDAR on July 31, 2018). Considerable opportunities remain to improve the project's economic return. The applicability of ore sorting to remove waste and low-grade material has been tested with positive results.

The potential economic impact will be assessed and incorporated in the detailed engineering phase or in subsequent studies. Additional metallurgical test work will also be performed to determine the potential to reduce reagent consumption. Early works and site preparation are planned at Copperwood for 2023.

Some site preparation work will need to be completed to meet permit obligations. Advancing towards site readiness and starting the initial phase of detailed engineering will help support a construction decision. A portion of these expenditures will net against the initial capital estimate.

Copperwood Next Steps The following key steps will be taken to facilitate a construction decision at Copperwood: Early Site Works: certain early site work must be completed to meet permit obligations under the Wetlands and Streams Permit. The Project will complete permitted impacts, which include site clearing and grubbing, during the summer of 2023. Environmental Mitigation: work will begin on environmental mitigation commitments under the Wetland and Streams Permit which must be completed within one year of on-site impact.

The impact and mitigation costs are included in the Feasibility Study. Detailed Engineering: detailed engineering will be initiated, particularly for long-lead items and any aspects of the project being included in early site works. Construction Finance Plan: capital markets will continue to be assessed and Highland will develop a broad financing plan for the construction of the Copperwood Project.