2023 Copperstone Resource Estimate

• Mineral Resources have an effective date of February 15, 2023. The Qualified Person responsible for the Mineral Resource estimate is Mr. Richard A. Schwering, P.G., SME-RM, an employee of Hard Rock Consulting, LLC.
• Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
• Inferred mineral resources are that part of a mineral resource for which the grade or quality are estimated on the basis of limited geological evidence and sampling. Inferred mineral resources do not have demonstrated economic viability and may not be converted to a mineral reserve. It is reasonably expected that the majority of Inferred mineral resources could be upgraded to Indicated mineral resources with continued exploration.
• The mineral resource is reported at an underground mining cut-off of 0.092 oz/ton (3.15 g/t) Au beneath the historic open pit and within coherent wireframe models, and for estimated blocks which meet the criteria of a minable shape. The cut-off is based on the following assumptions: a gold price of $1,800/oz; assumed mining cost of $90/ton ($99.21/tonne), process costs of $47/ton ($51.81/tonne), general and administrative and property/severance tax costs of $15.00/ton ($16.53/tonne), refining and shipping costs of $12.00/oz, a metallurgical recovery for gold of 95%, and a 3.0% gross royalty.
• Rounding may result in apparent differences when summing tonnes, grade and contained metal content. Tonnage and grade measurements are in Metric units. Contained metal is reported as troy ounces.