Highland Copper Identifies Key Optimization Opportunities Through Detailed Engineering at the Copperwood Project

About this update from Highland Copper Co., Inc.

VANCOUVER, British Columbia, June 03, 2026 (GLOBE NEWSWIRE) -- Highland Copper Company Inc. (TSXV: HI; OTCQB: HDRSF) ("Highland Copper" or “Highland” or the "Company") is pleased to provide an update on ongoing engineering and project optimization efforts at its Copperwood project (“Copperwood” or the “Project”) located in Michigan, U.S.A. The results of the optimization work, including the previously announced process plant redesign, are expected to be incorporated into an updated feasibility study (the “Updated FS”). This Updated FS will support project development planning and project financing initiatives. Highlights: Barry O’Shea, CEO of Highland Copper, stated, “As we continue our integrated mine plan review against a backdrop of significantly improved long-term consensus copper prices, we are encouraged by the opportunities to further optimize Copperwood through mine design, processing, and engineering enhancements. These initiatives have the potential to strengthen project economics and will be incorporated into the updated feasibility study. With Copperwood advancing toward a construction decision, the Project is entering an increasingly important stage of development at a time when few new copper projects are positioned to come online in the United States in the near term. As demand for domestically sourced critical minerals continues to grow, we believe Copperwood is strategically positioned to play an important role in the future U.S. copper supply chain.” Integrated Mine Plan Review Following the successful redesign of the process plant flow sheet, the current focus on engineering is an integrated mine plan review to evaluate potential optimizations to the mine plan, including revisions to cut-off grade assumptions and geotechnical parameters. The integrated mine plan review will also conclude on final design criteria and assumptions. Evaluation of Reduced Cut-off Grade: At a long-term consensus copper price of approximately $4.80 per pound, Highland is evaluating Copperwood Mineral Resources and Reserves at reduced cut-off grades compared to cut-off grades applied in the Company’s 2023 Feasibility Study1. Early indications include the potential addition of Measured and Indicated Resources into the mine plan, although the impact of this change on Mineral Reserves has not yet been determined. The potential impact on Mineral...

View stock analysis, news, and events for Highland Copper Co., Inc.