Integra Resources files technical report for updated MRE at DeLamar

Integra Resources announced that it has filed a technical report for the updated Mineral Resource Estimate at the DeLamar and Florida Mountain Project located in southwestern Idaho. The MRE incorporates the results from the highly successful stockpile drill program completed in April 2023. The stockpile drill program added an Indicated resource of 504,000 ounces gold equivalent and an Inferred resource of 46,000 oz AuEq. Subject to further economic studies, the mineralized stockpile and backfill material that was incorporated into the updated MRE demonstrates the potential for this material to significantly increase the heap leach mine life in future production phases. The updated MRE increased the total heap leachable oxide-and-mixed ounces within the Measured and Indicated category by ~25% and increased the total Inferred ounces by ~31%. In total, ~90% of the updated MRE falls within the M&I category, highlighting the quality and scarcity of projects such as DeLamar in the prolific Great Basin mining district of the USA. DeLamar Technical Report Highlights: Including the 2023 DeLamar MRE, Integra now controls a total M&I resource of 6.2 million ounces AuEq and a total Inferred resource of 0.9Moz AuEq across its key projects located in Idaho and Nevada, representing one of the largest resource endowments in the Great Basin of the USA not controlled by a major mining company. Stockpile & Backfill Resource Update: The maiden stockpile resource estimate contains an Indicated resource of 504 thousand ounces AuEq at 0.37 grams per tonne AuEq, including 296koz gold and 16.1Moz silver and an Inferred resource of 46koz AuEq at 0.30 g/t AuEq, including 26koz Au and 1.5Moz Ag. The Company allocated a total of ~US$4.6 million to the stockpile drill program which successfully resulted in the addition of greater than500kozs AuEq, representing the lowest discovery cost per ounce in the history of DeLamar. A portion of the mineralized stockpile and backfill material was moved as a pre-stripping cost in the 2022 Pre-feasibility Study, however this material is expected to be processed in future economic studies. The stockpile and backfill material is also expected to reduce the overall mining cost as the material is located at surface and was previously mined, reducing or eliminating additional blasting costs. Total DeLamar and Florida Mountain Resource Update: The total DeLamar M&I resource contains 4.8Moz AuEq at 0.60 g/t AuEq, including 2.9Moz Au and 142.7Moz Ag. The total DeLamar Inferred resource contains 621koz AuEq at 0.45 g/t AuEq, including 428koz Au and 15.0Moz Ag. Oxide-mixed Heap Leach Resource Update: The oxide and mixed heap leach portion of the M&I resource contains 2.6Moz AuEq at 0.50 g/t AuEq, including 1.6Moz Au and 73.9Moz Ag. The oxide and mixed heap leach portion of the Inferred resource contains 284koz AuEq at 0.36 g/t AuEq, including 199koz Au and 6.6Moz ounces Ag. The significantly increased oxide and mixed resource at DeLamar demonstrates the potential for an extended heap leach mine life in future phases of operations. The Company anticipates filing the Mine Plan of Operations for DeLamar in Q4 2023, making DeLamar one of the only precious metal development projects in the Western United States that is actively being advanced towards a production permit.