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Integra Receives Positive Approval to Proceed with Underground Development and Exploration Drill Program at Florida Mountain; Intersects 2.37 G/T AuEq over 90.98 M, Including 11.57 G/T AuEq over 12.65 M, and 1.83 G/T AuEq over 97.54 M, Including 77.15 G/T

Drill Results Mine Development & Operations Permits & Approvals

1050 – 400 Burrard Street

Vancouver, British Columbia, Canada

V6C 3A6

Email: [email protected]

FOR IMMEDIATE RELEASE TSXV: ITR ; NYSE American: ITRG

February 24, 2022 www.integraresources.com

INTEGRA RECEIVES POSITIVE APPROVAL TO PROCEED WITH UNDERGROUND DEVELOPMENT AND

EXPLORATION DRILL PROGRAM AT FLORIDA MOUNTAIN; INTERSECTS 2.37 G/T AuEq OVER 90.98 M,

INCLUDING 11.57 G/T AuEq OVER 12.65 M, AND 1.83 G/T AuEq OVER 97.54 M, INCLUDING 77.15 G/T

AuEq over 1.52 M

• Integra received positive approval from the United States Department of the Interior Bureau of Land

Management (“BLM”) through an Environmental Assessment ( “EA”) authorizing an underground

development and exploration drill p rogram to be conducted at the Company’s discretion, further

underscoring interest to support responsible mineral development at the DeLamar Project

• Drill result highlights from Florida Mountain include:

o FME-21-130

▪ 1.79 grams per tonne (“g/t”) gold (“Au”) and 45.17 g/t silver (“Ag”) ( 2.37 g/t gold

equivalent (“AuEq”)) over 90.98 meters (“m”)

• Including 0.15 g/t Au and 155.52 g/t Ag (2.16 g/t AuEq) over 6.25 m

• Including 9.32 g/t Au and 174.41 g/t Ag (11.57 g/t AuEq) over 12.65 m

• Including 1.86 g/t Au and 18.84 g/t Ag (2.10 g/t AuEq) over 15.55 m

o FME-21-134

▪ 1.65 g/t Au and 14.24 Ag (1.83 g/t AuEq) over 97.54 m

• Including 0.40 g/t Au and 57.88 g/t Ag (1.14 g/t AuEq) over 7.01 m

• Including 6.66 g/t Au and 21.11 g/t Ag (6.93 g/t AuEq) over 21.64 m

• Including 74.90 g/t Au and 175.00 g/t Ag (77.15 g/t AuEq) over 1.52 m

o FME-21-135

▪ 2.81 g/t Au and 444.00 g/t Ag (8.52 g/t AuEq) over 1.83 m

o FME-21-136

▪ 1.07 g/t Au and 174.11 g/t Ag (3.31 g/t AuEq) over 10.97 m

• Including 2.91 g/t Au and 445.19 g/t Ag (8.64 g/t AuEq) over 2.59 m

• As discussed in the Company’s recent P re-feasibility Study (“PFS”) news release dated February 9,

2022, and subject to future studies and drilling, the Company’s 110 high grade intercepts largely from

outside the Florida Mountain resource envelope, could positively impact the already robust

economics of the Project

• To view a video of President and CEO George Salamis discussing the drill results, click on the following

link: https://www.youtube.com/watch?v=F8QV8q0_6G4

Vancouver, British Columbia – Integra Resources Corp. (“Integra” or the “Company”) (TSX-V: ITR; NYSE

American: ITRG) announces drill results from the 2021 Florida Mountain drill program at the DeLamar

Project (“DeLamar” or the “Project”) which continue to demonstrate the potential for a high -grade

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resource below the existing Florida Mountain Deposit. In addition, the Company is pleased to announce

that it has received approval from the BLM authorizing an underground development and exploration drill

program at Florida Mountain. This underground development and exploration drill program could begin

at the Company’s discretion , subject to further on -going studies, and would allow for more efficient

delineation of high-grade resources below the Florida Mountain resource envelope.

“The Company is excited that the team at the BLM, working alongside our environmental permitting staff

in Boise, Idaho, granted Integra the approval through an EA authorizing an underground development and

exploration drill program at Florida Mountain. We are obviously very pleased with this news which we

view as a positive endorsement for respon sible resource development and exploration at the DeLamar

Project. The Company will engage third-party contractors to create a plan to potentially develop, at the

Company’s discretion, underground access at Florida Mountain to pursue an underground explora tion

drill program,” stated Integra President and CEO George Salamis. “An underground exploration drill

program, subject to the outcome of on-going studies, would allow the Company to drill the existing high-

grade gold-silver structures far more efficiently on tighter drill spacings and with less drill meters than

that which could be accomplished from surface drilling alone . Other potential operating efficiencies

include the ability to work in all seasons at Florida Mountain , from underground drill stations, as well as

to conduct limited bulk sampling on high grade gold-silver mineralization.

Mr. Salamis continued, “Exceptional drill results like those reported today continue to show the potential

for resource growth at Florida Mountain . T hese resu lts include both long runs of higher -grade

mineralization within the pit as well as continued high-grade hits below the existing resource envelope at

Florida Mountain. The Company has now intersected 110 drill intercepts of 4 g/t AuEq or greater with a

minimum width of 1.52 m at Florida Mountain, demonstrating the potential to complement the robust

low-grade resource at surface with a high -grade resource at depth. The potential to add a high -grade

resource below Florida Mountain , subject to on -going studies , could further enhance the robust

economics of the recently released PFS by increasing the grade of the material being processed through

the contemplated mill.”

The following table highlights selected intercepts from the Florida Mountain drill results announced today:

Drill Hole From

(m)

To

(m)

Interval

(m) g/t Au g/t Ag g/t AuEq

FME-21-130 1.68 92.66 90.98 1.79 45.17 2.37

including 3.20 9.45 6.25 0.15 155.52 2.16

including 15.70 28.35 12.65 9.32 174.41 11.57

including 77.11 92.66 15.55 1.86 18.84 2.10

FME-21-130 191.72 193.24 1.52 0.67 111.00 2.10

FME-21-130 267.31 268.04 0.73 2.73 538.00 9.65

FME-21-131 36.27 56.08 19.81 0.38 2.33 0.41

including 43.89 46.94 3.05 1.04 2.96 1.07

FME-21-131 138.07 154.23 16.16 0.56 11.23 0.70

including 146.00 147.52 1.52 2.05 40.83 2.58

FME-21-132 0.00 110.64 110.64 0.54 10.36 0.68

FME-21-134 2.13 99.67 97.54 1.65 14.24 1.83

including 2.13 9.14 7.01 0.40 57.88 1.14

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including 78.03 99.67 21.64 6.66 21.11 6.93

including 94.49 96.01 1.52 74.90 175.00 77.15

FME-21-135 97.23 133.20 35.97 0.25 12.14 0.40

including 122.23 123.44 1.21 2.09 3.29 2.13

including 128.32 130.15 1.83 0.49 125.00 2.10

FME-21-135 222.81 224.64 1.83 2.81 444.00 8.52

FME-21-136 0.00 104.55 104.55 0.50 9.78 0.63

including 5.18 12.95 7.77 0.97 36.46 1.44

including 90.83 103.02 12.19 2.00 9.34 2.12

including 90.83 92.96 2.13 5.27 9.43 5.39

FME-21-136 298.55 309.52 10.97 1.07 174.11 3.31

including 298.55 301.14 2.59 2.91 445.19 8.64

FME-21-137 71.48 124.05 52.57 0.27 8.82 0.39

including 119.48 121.01 1.53 0.92 131.00 2.61

FME-21-137 145.39 158.95 13.56 0.43 33.42 0.86

including 146.91 148.44 1.53 2.52 140.00 4.32

FME-21-139 0.00 163.68 163.68 0.28 8.45 0.39

including 73.76 75.29 1.53 1.92 65.44 2.76

including 157.28 161.24 3.96 0.39 65.77 1.24

FME-21-139 258.96 259.48 0.52 1.34 311.49 5.35

including 259.23 259.48 0.25 2.35 540.00 9.30

FME-21-149 49.07 100.89 51.82 0.13 22.83 0.43

including 53.65 55.17 1.52 0.04 202.00 2.64

FME-21-149 128.32 129.85 1.53 3.04 13.54 3.21

FME-21-150 40.84 115.52 74.68 0.23 17.73 0.46

including 51.97 53.49 1.52 1.84 251.00 5.07

including 104.85 106.38 1.53 3.11 21.28 3.38

FME-21-150 142.95 171.91 28.96 0.49 7.20 0.58

including 164.29 165.81 1.52 3.66 4.15 3.71

(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 70% conversion ratio)

(2) Gold equivalent = g Au/t + (g Ag/t ÷ 77.70)

(3) Intervals reported are uncapped

To view a cross section of Florida Mountain, click on the link below:

https://integraresources.com/site/assets/files/2572/february_fm_nr_xn_vuse.pdf

To view a plan map of Florida Mountain with the location of the cross section, Click on the link below:

https://integraresources.com/site/assets/files/2572/february_fm_nr_plan2.pdf

To view a topographical drill hole location map of Florida Mountain, click on the link below:

https://integraresources.com/site/assets/files/2572/drill_collar_location_-_fm-_2022-02-17.pdf

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The Florida Mountain Underground Mineral Exploration Plan of Operations

The BLM has conducted an EA (DOI-BLM-ID-B030-2022-0001EA) for Integra Resources’ DeLamar Mining

Company’s ( “DMC”) proposed underground development and exploration drill program at its current

operation in Owyhee County, Idaho. The proposed project would include the construction of an

underground portal pad in the historic mining area of Blue Gulch, exploration drifting into Florida

Mountain, the establishment of drill stations perpendicular to the veins and an underground exploration

drill plan. Based upon a review of the EA and DMC ’s commitments to minimizing environmental effects

during construction, operation, and reclamation of the proposed project, BLM has determined that the

Stone Cabin Mine Underground Portal Plan of Operations Amendment was not a major federal action and

did no t significantly impact the quality of the human environment. As defined by Code of Federal

Regulations (“CFR”) an environmental impact statement was not needed for this action. A Finding of No

Significant Impact (“FONSI”) was signed allowing the Company to move forward with detailed design and

subsequent construction activities.

The Company has now intersected 110 intercepts of 4 g/t AuEq or greater with a minimum width of 1.52

m. The drill success below the existing resource envelope at Florida Mountain continues to demonstrate

the potential for a high -grade resource below the Florida Mountain Deposit , which was recently the

subject of a PFS. None of these high-grade intercepts have been included in a Resource Estimate to date.

Including a high-grade resource into the mine plan laid out in the PFS has the potential to further enhance

the economics of the mill. Florida Mountain Non-Oxide material, which includes the high-grade intersects

disclosed today, could be processed through the existing mill flow sheet based on known metallurgy.

Increasing the grade and material run through the mill has the potential to increase production profile for

both gold and silver.

Select intercepts from drill holes FME-21-130, FME-21-132 and FME -21-135 were ru shed at the

laboratories and previously reported (please see the Company news release dated August 31, 2021). The

remaining portions of these drill holes were announced today in the table above.

Current Drill Status

The Company currently has 1 drill rig in operation at Sullivan Gulch. This drill rig is testing the extensions

of the Sullivan Gulch target while providing crucial data for further Albion test work.

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 Ph.D. (F.AusIMM), Integra’s Vice President Exploration, and is a “Qualified Person” (“QP”)

as defined in National Instrument 43- 101 – Standards of Disclosure for Mineral Projects.

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About Integra Resources

Integra is a development -stage mining company focused on the exploration and de -risking of the past

producing DeLamar Gold-Silver Project in Idaho, USA. Integra is led by the management team from Integra

Gold Corp. which successfully grew, developed and sold the Lamaque Project, in Quebec, for C$600 M in

2017. Since acquiring the DeLamar Project, which includes the adjacent DeLamar and Florida Mountain

gold and silver Deposits, in late 2 017, the Company has demonstrated significant resource growth and

conversion while providing a robust economic study in its maiden Preliminary Economic Assessment. The

Company is currently focused on resource growth through brownfield and greenfield exploration and the

the completion of an independent technical report for the PFS on the DeLamar Project announced on

February 9, 2022. The independent technical report prepared in accordance with the requirements of NI

43-101 will be available under the Company’s SEDAR profile within 45 days of the PFS news.

ON BEHALF OF THE BOARD OF DIRECTORS

George Salamis

President, CEO and Director

CONTACT INFORMATION

Corporate Inquiries: [email protected]

Company website: www.integraresources.com

Office phone: 1 (604) 416-0576

Forward looking and other cautionary statements

This news release contains “forward-looking information” and “forward-looking statements” (collectively,

“forward-looking statements”) within the mean ing 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

discussion with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions,

future events or performance (often, but not always using phrases such as “plans”, “expects”, “is

expected”, “budget”, “scheduled”, “estim ates”, “forecasts”, “intends”, “anticipates”, or “believes” or

variations (including negative variations) of such words and phrases, or state that certain actions, events

or results “may”, “could”, “would”, “might” or “will” be taken, 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 scope, timing and completion of the Pre-

feasibility study; estimates of meta llurgical recovery rates and the contribution of silver production to

mining operations; anticipated advancement of DeLamar and future exploration prospects. These

forward-looking statements, and any assumptions upon which they are based, are made in good faith and

reflect our current judgment regarding the direction of our business. Management believes that these

assumptions are reasonable. Forward -looking information involves known and unknown risks,

uncertainties and other factors which may cause the actual results, performance or achievements of the

Company to be materially different from any future results, performance or achievements expressed or

implied by the forward -looking information. Such factors include, among others: risks related to the

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speculative nature of the Company’s business; the Company’s formative stage of development; the

Company’s financial position; possible variations in mineralization, grade or recovery rates; actual results

of current exploration activities; actual results of recla mation 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 formation 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 anticipated,

estimated or intended.

Forward-looking statements contained herein are made as of the date of this news release and the

Company disclaims any obligation to update any forward-looking statements, whether as a result of new

information, future events or results, except as may be required by applicable securities laws. There can

be no assurance that forward-looking information will prove to be accurate, as actual results a nd future

events could differ materially from those anticipated in such statements. Accordingly, readers should not

place undue reliance on forward-looking information.

Cautionary Note for U.S. Investors Concerning Mineral Resources and Reserves

National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI 43-101") is a rule of the

Canadian Securities Administrators which establishes standards for all public disclosure an issuer makes

of scientific and technical information concerning mineral projects. Technical disclosure contained in this

news release has been prepared in accordance with NI 43-101 and the Canadian Institute of Mining,

Metallurgy and Petroleum Classification System. These standards differ from the requirements of the

U.S. Securities and Exchange Commission (“SEC”) and resource information contained in this press

release may not be comparable to similar information disclosed by domestic United States companies

subject to the SEC's reporting and disclosure requirements.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.