Idaho Strategic Resources Enters into Lease Agreement for the Niagara Copper-Silver Project in the Murray Gold Belt District

About this update from Idaho Strategic Resources, Inc.

The Niagara project hosts a historic resource estimate reported to include approximately 150 million pounds (lbs) of copper and 8 million ounces (oz) of silver COEUR D’ALENE, Idaho / Mar 12, 2026 / Business Wire / Idaho Strategic Resources, Inc. (NYSE American: IDR) (“IDR”, “Idaho Strategic” or the “Company”) is pleased to announce that it has executed a long-term lease agreement for the Niagara copper-silver (Cu-Ag) project located in Shoshone County, Idaho, within the Company’s district-scale Murray Gold Belt (MGB) landholdings. The Niagara Project is a Revett-type sediment hosted Cu-Ag deposit with a historic resource estimate from 2008 reported to include over 150 million pounds of copper and 8 million ounces of silver within the upper Revett Formation. Historic Resource - 2008 Classification Tonnes Copper Grade Contained Copper (lbs) Silver Grade (gpt) Contained Silver (oz) Inferred 17,759,604 0.39% 154,127,000 15.53 8,871,121 Prior exploration on the property, including limited exploration by New Jersey Mining Company (now Idaho Strategic Resources) in 2008, identified copper-silver mineralization in the upper Revett Formation. Revett-type ores are laterally extensive, stratabound deposits occurring in the upper and lower-middle Revett Formations. As identified by the USGS, the Niagara deposit is similar to Hecla’s Rock Creek and Libby Exploration projects, located in northwestern Montana. To date, no drilling has targeted the lower-middle Revett Formation of the Niagara deposit, or along strike within the upper Revett. IDR has planned a 2026 drill campaign to upgrade the historic resource confidence and test mineral continuity along strike and down dip of known mineralization, and the deeper host stratigraphy in the untested lower-middle Revett Formation. The Company believes it has excellent exploration potential for resource growth. “The Niagara deposit is a natural fit for our Company in many ways. In addition to broadening IDR’s commodity asset base as our country enters a strong secular commodity market, it also serves as a prime example of the potential of the overall MGB District,” commented John Swallow, President and CEO of Idaho Strategic. “Together, with our recent purchase of the Toboggan project from Hecla Mining and our nearby operating Golden Chest Mine, we are beginning to show the diverse commodity opportunity set in front of us he...

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