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Press Release Highlights:

• Results from both step-out and infill drilling continues to confirm gold-silver mineralization continuity and future resource expansion potential to the southeast of Sullivan Gulch
• Majority of drilling reported is well outside of the current inferred resource, and remains open for further expansion
• Select high-grade and significant lower-grade drill results from the Sullivan Gulch Zone within the DeLamar Deposit include:
  • IDM18_052 : 1.33 g/t AuEq over 195.99 meters (“m”) incl 5.40 g/t AuEq over 10.51 m, 10.58 g/t AuEq over 7.31 m, and 11.45 g/t AuEq over 2.29 m
  • IDM18_046 : 1.41 AuEq g/t over 144.78 m, incl 12.69 g/t AuEq over 9.15 m
  • IDM18_047 : 1.21 AuEq g/t over 179.83 m incl 3.38 g/t AuEq g/t over 25.91 m
  • IDM18_048 : 0.74 g/t AuEq over 327.66 m
• Results from new Induced Polarization (“IP”) survey suggest a geophysical anomaly at Sullivan Gulch extends 500 m beyond these step-out intercepts to the southeast
• Drilling on additional targets at the Delamar Deposit continues to confirm impressive resource expansion potential in areas such as Glenn Silver, Sommercamp, and others, including:
  • IDM18_035 : 1.51 g/t AuEq over 19.82 m (SW DeLamar)
  • IDM18_039 : 1.20 g/t AuEq over 36.58 m (DeLamar)
  • IDM18_029 : 0.80 g/t AuEq over 99.06 m (Sommercamp)
  • IDM18_42C : 1.90 g/t AuEq over 34.14 m (Sommercamp)
  • IDM18_023 : 0.89 g/t AuEq over 112.62 m (Glenn Silver) incl 1.63 g/t AuEq over 34.75 m

Vancouver, British Columbia – Integra Resources Corp. (TSXV:ITR ; OTCQX:IRRZF) (the “Company” or “Integra”) is pleased to announce additional assay results from its 2018 exploration program on the DeLamar Gold and Silver Project (“DeLamar, or the “Project”), located in the historic Owyhee County mining district in south western Idaho, U.S.A. The results announced today continue to positively demonstrate the continuity of mineralization within the DeLamar Deposit, with large zones of lower-grade gold-silver and selected higher-grade intercepts in Sullivan Gulch and other areas. Today’s results are from roughly 8,400 metres (“m”) of drilling (34 holes) as part of a 20,000 m exploration program currently underway in 2018.

“With an abundance of excellent drill results in-hand, it is becoming apparent that the potential to expand the gold-silver resource at DeLamar is being measurably demonstrated on multiple fronts” stated George Salamis, CEO of Integra Resources. “To date, Integra has drilled four fences roughly 100 to 150 m apart across the northern section of Sullivan Gulch. Today’s drill results demonstrate strong continuity of gold-silver mineralization over extensive widths, and in certain cases with high grades. Many of these results are located well outside of the existing inferred resource boundary, over intervals that are, at times, twice the average grade of the current inferred resource. The southernmost fence is located 150 m beyond the limit of the current inferred resource.”

Mr. Salamis continued, “Initial IP surveys conducted by Integra portrayed a very strong correlation between the existing inferred DeLamar resource outline and high IP chargeability. Subsequent surveys have highlighted a strong IP anomaly in Sullivan Gulch that extends 500 m beyond the last fence of drill results reported today. This IP anomaly has now delineated a target 1.2 kilometers in length at Sullivan Gulch, a zone that was not mined by previous operators. The new Zone at Sullivan Gulch, along with the IP chargeability on the Project, could potentially double the prospective footprint of the existing DeLamar Deposit trend.” Mr. Salamis added, “We are equally excited to report that elsewhere at DeLamar in zones such as Sommercamp and Glenn Silver, drill holes aimed to test beyond the margins of the current inferred resource envelope have returned with positive results that have the potential to significantly grow the resource. This summer’s drill program has strongly demonstrated the potential for resource growth at multiple targets on extension from the known inferred resource at DeLamar.”

DeLamar Deposit: Sullivan Gulch Zone Drill Results Summary

This latest round of drilling from Sullivan Gulch represents results from three separate drill fences located adjacent to the drill results previously disclosed in May and June this year. One fence was completed 100 m to the northwest, while two fences were drilled to the southeast in 100 m and 250 m step-outs, respectively.

To view the previous news releases outlining Sullivan Gulch drill results, please click on the following links:

https://integraresources.com/site/assets/files/2568/2018-05-10-nr-itr-ptug69.pdf
https://integraresources.com/site/assets/files/2574/2018-06-25-nr-itr-r3gsz2.pdf

The following table highlights selected intercepts from this set of drill results.

1. Downhole thickness; true width varies depending on drill hole dip; most drill holes are aimed at intersecting the vein structures close to perpendicular therefore true widths are close to downhole widths (approximately 85% conversion ratio)
2. Gold equivalent = g Au/t + (g Ag/t ÷ 85)

To view cross sections of the Sullivan Gulch Zone within the DeLamar Deposit please click on the following links:

https://www.integraresources.com/site/assets/files/2572/sullivan_gulch_46-48_vuse-1.pdf
https://www.integraresources.com/site/assets/files/2572/sullivan_gulch_-_50_and-1.pdf

To view a plan map of the current drill program at the DeLamar Deposit, please click on the following link:

https://www.integraresources.com/site/assets/files/2572/delamar_vuse.pdf

Induced Polarization Geophysical Survey Results

The Company completed its first comprehensive Induced Polarisation (“IP”) geophysical survey at 300 m line-spacings over the entire DeLamar Deposit inferred resource footprint. The results of the survey clearly depicted a strong correlation between the high IP chargeability anomaly and the DeLamar inferred resource. Encouraged by these results, Integra completed additional IP geophysical work at DeLamar, in areas roughly 2 km to the northwest (the Henrietta and Milestone targets), as well as to the southeast (the Sullivan Gulch and Sullivan Knob targets) of the DeLamar deposit boundaries. As a means of drill targeting, the Company has been successfully following the IP anomaly to the southeast on extension from Sullivan Gulch, with excellent results such as those released today.

The IP chargeability anomaly hosting today’s drill results extends an additional 500 m to the southeast in an area that has not yet been tested by the Company. Management is confident that Sullivan Gulch is open to the southeast and plans to drill these areas in the near future.

Glenn Silver, Sommercamp, and Other DeLamar Deposit Drill Results Summary

In addition to the successful drilling at Sullivan Gulch, the Company has been actively exploring other zones within the DeLamar Deposit. These targets, including Glenn Silver, Sommercamp, and others, were drilled with the intention of confirming the existing inferred resource and testing for unexplored lateral extensions of gold-silver mineralization.

Previous drilling conducted by Kinross Gold (“Kinross”) and others at DeLamar was largely limited to an average depth of 120 m, whereas Integra’s current program has been drill testing to an average depth of +250 m vertical. The majority of the drill results reported below were completed in drill holes occurring between 50 m and 100 m laterally on extension from the current inferred resource model in areas within the DeLamar Deposit such as Glenn Silver, Sommercamp, and N. Delamar. Today’s results highlight strong opportunity for future resource expansion across multiple zones of the DeLamar Deposit.

The following table highlights selected intercepts from this tranche of drill results.

1. Downhole thickness; true width varies depending on drill hole dip; most drill holes are aimed at intersecting the vein structures close to perpendicular therefore true widths are close to downhole widths (approximately 85% conversion ratio)
2. Gold equivalent = g Au/t + (g Ag/t ÷ 85)

DeLamar Project Exploration Ongoing

Since the start of the 2018 exploration campaign, the Company has drilled roughly 19,333 m in 54 drill holes. A metallurgical testwork program is now also ongoing with McClelland Labs in Reno, Nevada.

To view the Metallurgy Testwork Program news release, please click on the following link:

https://integraresources.com/site/assets/files/2579/2018-09-06-nr-itr-hshg5u.pdf

The 2018 exploration drill campaign is expected to conclude in mid-October, 2018.

Sampling and QA/QC Procedure

Thorough QA/QC protocols are followed on the Project, including insertion of duplicate, blank and standard samples in the assay stream for all drill holes. The samples are submitted directly to American Assay Labs in Reno, Nevada for preparation and analysis. Analysis of gold is performed using fire assay method with atomic absorption (AA) finish on a 1 assay ton aliquot. Gold results over 5 g/t are re-run using a gravimetric finish. Silver analysis is performed using ICP for results up to 100 g/t on a 5 acid digestion, with a fire assay, gravimetric finish for results over 100 g/t silver.

Qualified Person

The scientific and technical information contained in this news release has been reviewed and approved by E. Max Baker PhD. (FAusIMM), Integra’s Vice President Exploration, of Reno, Nevada, and is a “Qualified Person”(“QP”) as defined in National Instrument 43- 101 – Standards of Disclosure for Mineral Projects.

About Integra Resources

Integra Resources Corp. is a development-stage company engaged in the acquisition, exploration and development of mineral properties in the Americas. The primary focus of the Company is advancement of it’s DeLamar Project, consisting of the neighbouring DeLamar and Florida Mountain Gold and Silver Deposits in the heart of the historic Owyhee County mining district in south western Idaho. The first exploration program in over 25 years is currently underway on the DeLamar Project with more than 20,000 meters planned for 2018. The management team comprises the former executive team from Integra Gold Corp.

ON BEHALF OF THE BOARD OF DIRECTORS

George Salamis
President, CEO, and Director

CONTACT INFORMATION

Corporate Inquiries: Chris Gordon, [email protected]
Company website: www.integraresources.com
Office phone: 1 (604) 416-0576

This news release contains “forward-looking information” and “forward-looking statements” (collectively, “forward-looking statements”) within the meaning of the applicable Canadian securities legislation. All statements, other than statements of historical fact, are forward-looking statements and are based on expectations, estimates and projections as at the date of this news release. Any statement that involves discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions, future events or performance (often but not always using phrases such as “expects”, or “does not expect”, “is expected”, “anticipates” or “does not anticipate”, “plans”, “budget”, “scheduled”, “forecasts”, “estimates”, “believes” or “intends” or variations of such words and phrases or stating that certain actions, events or results “may” or “could”, “would”, “might” or “will” be taken to occur or be achieved) are not statements of historical fact and may be forward-looking statements. In this news release, forward-looking statements relate, among other things, to: statements about the estimation of mineral resources; magnitude or quality of mineral deposits; anticipated advancement of mineral properties or programs; future operations; future exploration prospects; the completion and timing of mineral resource estimates; the length of the current market cycle and requirements for an issuer to survive in the current market cycle; future growth potential of Integra; and future development plans.

These forward-looking statements are based on reasonable assumptions and estimates of management of Integra at the time such statements were made. Actual future results may differ materially as forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of Integra to materially differ from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors, among other things, include: possible variations in mineralization, grade or recovery rates; actual results of current exploration activities; actual results of reclamation activities; conclusions of future economic evaluations; business integration risks; fluctuations in general macroeconomic conditions; fluctuations in securities markets; fluctuations in spot and forward prices of gold, silver, base metals or certain other commodities; fluctuations in currency markets (such as the Canadian dollar to United States dollar exchange rate); change in national and local government, legislation, taxation, controls, regulations and political or economic developments; risks and hazards associated with the business of mineral exploration, development and mining (including environmental hazards, industrial accidents, unusual or unexpected formations pressures, cave-ins and flooding); inability to obtain adequate insurance to cover risks and hazards; the presence of laws and regulations that may impose restrictions on mining; employee relations; relationships with and claims by local communities and indigenous populations; availability of increasing costs associated with mining inputs and labour; the speculative nature of mineral exploration and development (including the risks of obtaining necessary licenses, permits and approvals from government authorities); and title to properties. Although the forward-looking statements contained in this news release are based upon what management of Integra believes, or believed at the time, to be reasonable assumptions, Integra cannot assure its shareholders that actual results will be consistent with such forward-looking statements, as there may be other factors that cause results not to be as anticipated, estimated or intended.

Readers should not place undue reliance on the forward-looking statements and information contained in this news release. Except as required by law, Integra assumes no obligation to update the forward-looking statements of beliefs, opinions, projections, or other factors, should they change, except as required by law.

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