Integra Resources Sees Potential Growth with Low Initial Dump Volume and Grade Estimates

Integra Resources Corp. is a precious metals producer with its main operating asset being the Florida Canyon Mine in Nevada. The company is also advancing its development-stage heap leach projects, including the DeLamar Project in Idaho and the Nevada North Project in western Nevada. The Florida Canyon Mine produces gold by open pit mining and heap leaching, while the DeLamar and Nevada North Projects involve gold and silver mining. Initial dump volume and grade estimates underscore near-term growth potential.

VANCOUVER, BC, Oct. 9, 2025 /CNW/ - Integra Resources Corp. ("Integra" or the "Company") (TSXV: ITR) (NYSE American: ITRG) is pleased to announce results from the 2025 growth drilling program at its primary operating asset, the Florida Canyon Mine ("Florida Canyon") located in Nevada. The drill program, which consists of 16,000 meters ("m") of reverse circulation ("RC") and sonic drilling, marks the first phase of a multi-year growth strategy designed to expand mineral resources and reserves, extend mine life, and enhance the value of Florida Canyon.

The 2025 growth drilling program is focused on three key areas: (1) near-surface oxide potential from historical low-grade gold-mineralized waste material, (2) expanding in-situ resources between existing mine open pits, and (3) testing lateral extensions and in-pit infill drilling. As of the date of this news release, approximately 13,000 m of drilling has been completed.

Opportunity 1: Near-Surface Oxide Potential from Historical Dump Material

Drilling targeting large volumes of historical, gold-mineralized, low-grade waste material that was below the mining cut-off in a significantly lower gold-price environment. These areas demonstrate a significant near-term opportunity to increase mineral resources and potentially extend mine life at Florida Canyon. Top intercepts from drilling at the South Dump include:

- FCM25-0646: 0.21 g/t oxide Au over 73.2 m
- FCM25-0652: 0.20 g/t oxide Au over 68.6 m
- FCM25-0647: 0.20 g/t oxide Au over 53.3 m

Opportunity 2: Expand In-Situ Resources Between Existing Mine Open Pits

Drilling targeting "saddle" and "ridge" ("Inter-Pit") areas located between active and historical pits. Top intercepts from the Inter-Pit areas include:

- FCM25-0592: 0.48 g/t Au over 76.2 m, incl. 8.03 g/t Au over 1.5 m and 3.13 g/t Au over 1.5 m (Central / Radio Tower Saddle)
- FCM25-0625: 0.81 g/t Au over 76.2 m, incl. 14.87 g/t Au over 1.5 m (Radio Tower Extension)
- FCM25-0609: 0.28 g/t Au over 100.6 m (Jasperoid Hill Pit)

Metallurgical bottle roll leach tests are underway on material gathered from the drill program to assess potential gold recoveries and other ore characteristics; preliminary indications suggest favorable heap leach characteristics. The 2025 drill program at Florida Canyon is expected to support a mineral resource and reserve update and a revised life-of-mine plan in the first half ("H1") of 2026.

George Salamis, President, CEO and Director of Integra commented: "We are pleased to see additional success from our 2025 near-mine oxide drilling campaign at Florida Canyon. Building on initial results released in August, we continue to see excellent gold-mineralized intercepts in both the historical dump and Inter-Pit areas, which confirm excellent grade continuity and continue to highlight the potential to grow mineral resources and extend mine life. Furthermore, the initial volume and grade estimates from the North and South Dump of ~34 - 56 million tonnes with a grade range of ~0.11 - 0.25 g/t oxide Au demonstrates the potential size and scale of the near-term life-of-mine growth opportunity at Florida Canyon."

Key Figures

- Figure 1 – Florida Canyon Mine 2025 Growth Drilling Target Areas: [Figure 1 Link]
- Figure 2 – Historical Mine Dump 2025 Drill Collars and Potential Volume Footprint: [Figure 2 Link]
- Figure 3 – Historical South Mine Dump Material Cross Section A-A': [Figure 3 Link]
- Figure 4 – Inter-Pit 2025 Drill Collars: [Figure 4 Link]
- Figure 5 – Inter-Pit Cross Section B-B': [Figure 5 Link]
- Figure 6 – Radio Tower Cross Section C-C': [Figure 6 Link]
- Figure 7 – Florida Canyon Cross Section D-D': [Figure 7 Link]
- Figure 8 – 2025 Florida Detailed Drilling Results: [Figure 8 Link]

References

INTEGRA ANNOUNCES RESULTS FROM NEAR-MINE OXIDE GOLD DRILLING AT FLORIDA CANYON; INITIAL DUMP VOLUME AND GRADE ESTIMATES UNDERSCORE NEAR-TERM GROWTH POTENTIAL^[1] https://finance.yahoo.com/news/integra-announces-results-near-mine-103000799.html