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Yorbeau Announces Further Positive Assay Results from the Drilling Programs ON the Rouyn Project, Quebec, Including 27.8 G/T Au over 9.8 Metres.

Drill Results

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

PRESS RELEASE

FOR IMMEDIATE RELEASE

YORBEAU ANNOUNCES FURTHER POSITIVE ASSAY RESULTS FROM THE

DRILLING PROGRAMS ON THE ROUYN PROJECT, QUEBEC, INCLUDING 27.8 g/t

Au OVER 9.8 METRES.

Montreal, Quebec, May 13, 2020 – Yorbeau Resources Inc. (TSX: YRB) (“Yorbeau” or the “Company”) is

pleased to report that its partner IAMGOLD Corporation ( “IAMGOLD”) released today the assay results

from diamond drilling programs completed on the Astoria area and on the Lac Gamble Zone at the

Company’s Rouyn Gold P roject. The project is located 4 km south of Rouyn- Noranda, Quebec, and

approximately 45 kilometers southwest of IAMGOLD’s Westwood mine.

IAMGOLD is reporting assay results from eighteen diamond drill holes, totaling 6,585 metres drilled on the

Astoria area, located approximately two kilometres east of the Lac Gamble Zone, and from twenty diamond

drill holes completed on Lac Gamble Zone, totaling 6,298 metres. Two drill holes targeting the Lac Gamble

Zone were abandoned due to excessive deviation and re- collared. Results are pending from an additional

twelve diamond drill holes completed totaling 4,062 metres. These results will be reported once they are

received, validated and compiled.

The assay results reported herein are provided in Tables 1 and 2 below and include the following highlights

(two longitudinal sections illustrating the drilling program on the Lac Gamble and the Astoria a rea are

attached to this news release):

Lac Gamble Zone - Main Zone:

• Drill hole GA-19-709W2: 9.8 metres grading 10.4 g/t Au

includes: 3.0 metres grading 22.8 g/t Au

• Drill hole GA-20-747: 6.8 metres grading 5.9 g/t Au

includes: 0.9 metres grading 32.7 g/t Au

• Drill hole GA-20-748: 5.8 metres grading 4.7 g/t Au

includes: 2.6 metres grading 7.7 g/t Au

• Drill hole GA-20-750: 9.8 metres grading 27.8 g/t Au

includes: 4.4 metres grading 58.4 g/t Au

Astoria Area – Upper Zone:

• Drill hole AS-19-732: 5.0 metres grading 4.6 g/t Au

includes: 1.0 metres grading 14.4 g/t Au

• Drill hole AS-19-733: 4.0 metres grading 5.5 g/t Au

includes: 1.0 metres grading 13.3 g/t Au

• Drill hole AS-19-739: 3.5 metres grading 5.7 g/t Au

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

Astoria Area – Lower Piché Zone

• Drill hole AS-19-738: 2.2 metres grading 7.9 g/t Au

includes: 1.2 metres grading 12.3 g/t Au

• Drill hole AS-19-741: 9.0 metres grading 5.8 g/t Au

includes: 1.0 metres grading 39.2 g/t Au

The objective of the diamond drilling program in the area of the historic Astoria deposit was to test selected

exploration targets to evaluate continuity of mineralization for the potential to outline a resource.

The objective of the diamond drilling program on the Lac Gamble Zone was to continue a systematic infill

drilling program at nominal 50 x 50 metre drill centres in the upperpart of the zone to support a future

resource estimation. In addition, lateral extensions were also targeted to evaluate the potential to expand

the zone.

Both drilling programs successfully intersected the targeted sheared Cadillac-Piché corridor which hosts

the mineralized zones. The Lac Gamble and Astoria mineralized zones are associated with alteration

varying from several metres to greater than ten metres in width hosted in the ultramafic rocks of the Piché

Group, exhibiting variable carbonatization, fuchsite, silicification, crosscut by a network of white quartz and

brown tourmaline stockwork veins and breccias. Gold mineralization occurs as small specks of visible free

gold associated with minor sulphides in quartz -tourmaline veinlets. In the Astoria area mineralized zones

are also intersected at the contact with the sedimentary sequences bordering the Piché Group and contains

grey quartz veinlets with up to 10% disseminated to narrow massive bands of Arsenopyrite adjacent to the

veins.

“Results reports today are highly encouraging and we are very satisfied by the work accomplished in

partnership with IAMGOLD on the project. At Gamble, delineation drilling continues to show continuity of

mineralization with high- grade intercept s over signi ficant width, ” commented Sylvain Lépine, General

manager Exploration of Yorbeau. “We are looking forward to do additional exploration drilling, especially in

Astoria sector where good potential to delineate additional resources has been identified. ”

In a separate press release on the current results, Craig MacDougall, Senior Vice President, Exploration

for IAMGOLD, stated: “We continue to be pleased with the positive results obtained from our infill and

evaluation drilling programs, especially those from our priority target at Lac Gamble which we are working

to advance to a formal resource estimate. The Rouyn Gold project provides IAMGOLD with an opportunity

to delineate satellite resources with the objective of supplementing production at our Westwood operation

and utilizing our existing infrastructure and excess mill capacity. I want to especially acknowledge the efforts

of the exploration team who had to contend with the sudden impacts of the COVID-19 crisis and were able

to suspend drilling operations in an orderly way on very short notice. We look forward to resumption of our

exploration activities , which will be done progressively in a safe manner following confirmation by the

government of Quebec that exploration activities may resume.”

Next Steps

In response to the global COVID-19 crisis, the Company with its partner IAMGOLD, immediately activated

appropriate actions to ensure a coordinated respons e. All exploration drilling and field activities were

temporarily suspended as directed by the government of Quebec and will resume subject to the guidelines

and approval of the required government authorities and when judged safe to do so.

The assay results from the drilling programs are being compiled and integrated with the existing geological,

geochemical and structural information to support the development and refinement of a preliminary deposit

model. This work will also be used to support the compl etion of a mineral resource estimation of the Lac

Gamble zone currently in planning.

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

As described above, the planned 2020 Lac Gamble drilling program was suspended before completion.

Timing for the resumption of the program will be assessed as conditions allow. The 2020 exploration

program was designed to also evaluate other selected exploration targets in the area of the historic Astoria

deposit and other identified satellite targets with up to a further 5,000 metres of diamond drilling planned.

All pending assay results from drilling completed to date on Lac Gamble will be reported once they are

received, validated and compiled.

About the Rouyn Gold Project

The Rouyn Gold Property is located about 4 km south of Rouyn- Noranda, Quebec. With a long history of

mining, the city of Rouyn -Noranda offers many advantages for mining and exploration, including political

and social stability, good access and infrastructure, skilled mining personnel, and one of the most mining-

friendly jurisdictions in the world.

The property covers a 12-kilometre stretch of the Cadillac-Larder Lake Break and contains four known gold

deposits along the 6- km Augmitto-Astoria corridor situated on the western portion of the property. Two of

the four deposits, Astoria and Augmitto, benefit from established underground infrastructure and have been

the subject of technical reports that include resource estimates that were previously filed in accordance

with Regulation NI 43-101.

The Lac Gamble zone is located between the Augmito and the Astoria deposits. The exploration target

potential at Lac Gamble is interpreted to be between 400,000 and 600,000 ounces of gold at a grade

between 7.0 and 8.5 g/t Au. The potential quantity and grade of the exploration targets referred to are

conceptual in nature and insufficient exploration work has been completed to define a mineral resource.

The property may require significant future exploration to advance to a resource stage and there can be no

certainty that the exploration target will result in a mineral resource being delineated. The exploration

targets are consistent with similar deposits in the area, deposit models or derived from initial drilling results.

IAMGOLD signed a definitive option agreement in December 2018, whereby IAMGOLD has the option to

acquire a 100% interest in the Project by making scheduled cash payments totaling C$4 million and

completing exploration expenditures totaling C$9 million over a four year period. Exploration programs must

include the completion of a minimum of 20,000 metres of diamond drilling within the first two- years of the

option. By the end of the expenditure period, IAMGOLD must complete a NI 43 -101 compliant resource

estimate, after which IAMGOLD, at its election, can purchase a 100% interest in the Project, subject to a

2% net smelter return production royalty, by paying Yorbeau the lesser of C$15 per resource ounce or

C$30 million. IAMGOLD is in the second year of the option agreement.

Technical Information and Quality Control Notes

The drilling results contained in this news release have been prepared in accordance with National

Instrument 43-101 Standards of Disclosure for Mineral Projects.

Work at Yorbeau is carried out under the supervision of Sylvain Lépine, M.Sc, P. Geo. He is a qualified

person (as defined by NI 43-101) and has reviewed and approved the content of this release.

The design of the drilling program and interpretation of res ults is under the control of IAMGOLD’s and

Yorbeau’s geological staff, including qualified persons employing strict protocols consistent with NI 43-101

and industry best practices. The sampling of, and assay data from, the drill core is monitored through t he

implementation of a quality assurance - quality control (QA-QC) program. Drill core (NQ size) is logged and

samples are selected by geologists and then sawn in half with a diamond saw at the project site. Half of the

core is retained at the site for reference purposes. Sample intervals may vary from half a metre to one and

a half metres in length depending on the geological observations.

Half-core samples are packaged and transported in sealed bags to AGAT laboratories in Val-d’Or, Quebec,

and Mississauga, Ontario. Samples are coarse crushed to a - 10 mesh and then a 1,000 gram split is

pulverized to 95% passing -150 mesh. AGAT prepare analytical pulps at their facilities located in Val -d’Or

and proces s the pulps at their Mississauga laboratory which is ISO / IEC 17025:2005 certified by the

Standards Council of Canada. Samples are analyzed using a standard fire assay with a 50 gram charge

with an Atomic Absorption (AA) finish. For samples that return assay values over 3.0 grams per tonne,

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

another pulp is taken and fire assayed with a gravimetric finish. Core samples showing visible gold or

samples which have returned values greater than 10.0 grams per tonne are processed with a protocol

involving fine grinding of the entire sample, followed by metallic sc reen analysis of the entire pulverized

material. Insertion of duplicate, blanks and certified reference standards in the sample sequence is done in

all drill holes for quality control.

About Yorbeau Resources Inc.

The Rouyn Property, wholly -owned by the Company, contains four known gold deposits in the 6- km-long

Augmitto-Astoria corridor situated on the western portion of the property. The Company signed a definitive

agreement in December 2018, whereby IAMGOLD has the option to acquire a 100% interest in the Rouyn

property, and a major drilling program is underway. Two of the four deposits, Astoria and Augmitto, benefit

from substantial underground infrastructure and have been the subject of technical reports that include

resource estimates and that were f iled in accordance with Regulation 43- 101. In 2015, the Company

expanded its exploration property portfolio by acquiring strategic base metal properties in prospective areas

of the Abitibi Belt of Quebec and Ontario that feature an infrastructure favourabl e for mining development.

The newly acquired base metal properties include the Scott Project, which bears important mineral

resources (see the press release dated March 30, 2017) and on which a positive Preliminary Economic

Assessment was recently completed.

For additional information on the Company, consult its website at www.yorbeauresources.com.

For further information, please contact:

Sylvain Lépine, M.Sc, P. Geo G. Bodnar Jr.

General Manager Exploration, President, Chief Financial Officer

Yorbeau Resources Inc. Yorbeau Resources Inc.

[email protected] [email protected]

Tel: 819-277-0577 Tel: 514-384-2202

Toll free in North America: 1-855-384-2202

Forward-looking statements: Except for statement of historical fact, all statements in this news release,

including without limitation, regarding the prospects of the Rouyn property, future plans and objectives are

forward-looking statements which involve risks and uncertainties. There can be no assurance that such

statements will prove to be accurate; actual results and future events could differ materially from those

anticipated in such statements. Yorbeau disclaims any obligation to update such forward- looking

statements, other than as required by applicable securities laws.

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

Notes:

1. True widths of intersections are estimated at 60-83% of the core interval approximately.

2. Drill hole intercepts are calculated with a lower cut of 1.00 g/t Au and may contain lower grade interval of up to 3 metres in

length.

3. Assays are reported uncut but high grade sub-intervals are highlighted.

4. Drill holes with the suffix W are wedge cuts from previously drilled master holes.

Hole No. AZ DIP Depth /

length from To Interval True

Width (1) Au (2) (3) NOTE

Easting Northing Elevation (°) (°) (m) (m) (m) (m) (m) (g/t)

GA-19-709W2 (4) 644 391 5 339 914 3 096 155.3 -79.1 330.00 480.25 490.00 9.75 7.72 10.35 Main zone

Including (3) 487.00 490.00 3.00 2.38 22.83

GA-20-742 644 307 5 339 824 3 286 183.4 -71.6 351.00 294.40 298.50 4.10 3.08 1.21 Main zone

308.00 316.75 8.75 6.60 1.95 Main zone

GA-20-743 644 337 5 339 913 3 282 182.0 -78.0 480.00 436.60 439.00 2.40 1.88 7.43 Main zone

GA-20-744 644 240 5 339 915 3 283 182.0 -79.0 483.00 439.50 442.50 3.00 2.28 1.44 Main zone

GA-20-745 644 227 5 339 871 3 284 180.9 -69.7 405.00 330.55 333.00 2.45 1.92 1.11 Main zone

GA-20-746 644 486 5 339 786 3 288 184.0 -54.6 225.00

GA-20-747 644 539 5 339 796 3 288 183.0 -63.0 237.00 198.15 204.90 6.75 5.40 5.85 Main zone

Including (3) 204.00 204.90 0.90 0.72 32.70

GA-20-748 644 567 5 339 812 3 288 185.0 -66.0 273.00 211.20 212.20 1.00 0.72 4.20 Hangingwall zone

216.50 222.30 5.80 4.17 4.71 Main zone

Including (3) 219.70 222.30 2.60 1.87 7.71

228.00 230.00 2.00 1.44 8.19 Main zone

GA-20-749 644 497 5 339 861 3 286 183.0 -72.1 99.00 Abandonned due to excessive drill hole deviation

GA-20-750 644 613 5 339 796 3 291 181.4 -65.9 234.00 195.00 204.80 9.80 7.25 27.75 Main zone

Including (3) 196.00 200.35 4.35 3.22 58.37

GA-20-751 644 497 5 339 861 3 286 190.0 -76.0 366.00 329.50 330.60 1.10 0.85 2.80 Main zone

335.00 337.00 2.00 1.55 1.80 Main zone

GA-20-752 644 613 5 339 796 3 286 186.0 -76.0 267.00 221.60 222.60 1.00 0.67 6.50 Hangingwall zone

228.40 232.40 4.00 2.67 1.45 Hangingwall zone

235.20 237.90 2.70 1.81 9.37 Main zone

GA-20-753 644 687 5 339 910 3 282 181.0 -83.0 468.25 400.65 406.25 5.60 3.85 0.95 Main zone

464.00 466.00 2.00 1.42 1.06 Footwall zone

GA-20-754 644 668 5 339 810 3 286 185.0 -58.0 216.00 175.70 177.20 1.50 1.27 1.76 Main zone

179.70 185.40 5.70 4.81 1.75 Main zone

213.00 214.00 1.00 0.84 7.19 Footwall zone

GA-20-755 644 668 5 339 810 3 286 180.0 -45.0 195.00 156.50 161.40 4.90 4.50 2.09 Main zone

GA-20-756 644 687 5 339 910 3 283 200.0 -88.0 532.80 463.00 464.00 1.00 0.66 0.71 Main zone

511.00 513.00 2.00 1.12 2.31 Footwall zone

GA-20-758 644 687 5 339 910 3 282 184.0 -67.0 366.00 324.50 325.60 1.10 0.91 2.80 Main zone

GA-20-759 644 570 5 339 993 3 284 175.9 -88.8 81.00 Abandonned due to excessive drill hole deviation

GA-20-760 644 727 5 339 778 3 284 182.0 -65.7 240.40 157.70 164.30 6.60 5.15 3.73 Main zone

Including (3) 161.70 164.30 2.60 2.03 6.46

190.10 191.50 1.40 1.09 1.44 Footwall zone

GA-20-763 644 345 5 339 928 3 280 183.0 -70.0 448.20

6297.65

Table 1 : Rouyn Project Drilling Results - 2020 Lac Gamble Drilling program

UTM NAD83 Zone 17

No significant results

No significant results

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

Hole No. AZ DIP Depth /

length From To Interval True

Width (1) Au (2) (3) NOTE

Easting Northing Elevation (°) (°) (m) (m) (m) (m) (m) (g/t)

AS-14-636W (4) 646 038 5 340 052 2 953 173 -73 331.00 565.40 571.10 5.70 4.56 2.75 Upper zone

616.00 617.00 1.00 0.81 5.72 Lower Piché zone

623.00 625.50 2.50 2.04 3.33 Main zone

AS-19-725 646 120 5 339 905 3 301 183 -63 324.00 181.10 185.95 4.85 3.57 0.73 Upper zone

250.40 251.70 1.30 0.99 1.03 Main zone

257.15 260.90 3.75 2.77 1.34 Main zone

AS-19-726 646 293 5 339 966 3 302 184 -81 432.00 282.00 285.00 3.00 1.60 1.79 Hangingwall

298.90 304.50 5.60 3.01 2.16 Upper zone

363.25 366.60 3.35 1.82 0.87 Main zone

372.00 375.00 3.00 1.63 1.54 Main zone

AS-19-727 646 253 5 340 065 3 308 183 -75 522.00 401.75 405.00 3.25 2.26 3.60 Upper zone

447.50 448.50 1.00 0.70 2.01 Main zone

463.60 466.00 2.40 1.68 1.56 Main zone

472.00 472.80 0.80 0.56 1.91 Main zone

493.00 494.00 1.00 0.71 1.73 Footwall zone

AS-19-728 646 872 5 339 845 3 293 184 -75 259.60 187.60 189.90 2.30 1.46 1.36 Main zone

196.70 199.20 2.50 1.60 1.79 Main zone

AS-19-729 646 827 5 339 852 3 296 182 -68 237.00 177.00 178.40 1.40 1.01 1.46 Upper zone

185.60 189.40 3.80 2.72 3.70 Main zone

AS-19-730 646 910 5 339 847 3 296 180 -68 219.00 159.70 161.70 2.00 1.52 1.04 Main zone

167.20 170.80 3.60 2.73 4.32 Main zone

Including (3) 167.20 168.70 1.50 1.14 8.40

AS-19-731 646 956 5 339 845 3 295 180 -79 253.00 82.50 85.50 3.00 1.82 1.15 Upper zone

AS-19-732 646 681 5 339 846 3 299 178 -73 237.00 172.80 177.80 5.00 3.09 4.58 Upper zone

Including (3) 172.80 173.80 1.00 0.62 14.40

181.00 184.00 3.00 1.85 1.82 Upper zone

193.30 195.30 2.00 1.24 1.79 Main zone

200.80 203.80 3.00 1.89 4.61 Main zone

Including (3) 202.80 203.80 1.00 0.63 9.50

AS-19-733 646 736 5 339 847 3 298 181 -75 252.00 173.05 177.00 3.95 2.48 5.48 Upper zone

Including (3) 173.05 174.00 0.95 0.60 13.30

207.00 208.00 1.00 0.64 2.10 Main zone

AS-19-734 646 943 5 339 875 3 297 180 -81 309.00 255.65 267.00 11.35 6.58 1.75 Main zone

Including (3) 255.65 256.65 1.00 0.58 9.40

AS-19-735 647 048 5 339 926 3 304 178 -58 432.00

AS-19-736 647 048 5 339 925 3 304 186 -76 321.40

AS-19-737 646 167 5 339 907 3 300 176 -70 312.00 201.50 204.50 3.00 2.02 1.34 Upper zone

242.20 243.70 1.50 1.01 2.14 Main zone

AS-19-738 646 176 5 339 958 3 304 180 -77 458.25 371.30 373.50 2.20 1.24 7.94 Lower Piché zone

Including (3) 371.30 372.50 1.20 0.68 12.30

377.90 378.90 1.00 0.56 1.70 Lower Piché zone

422.70 425.20 2.50 1.45 2.52 Main zone

AS-19-739 646 293 5 339 967 3 302 178 -71 354.00 234.00 237.50 3.50 2.40 5.73 Upper zone

287.60 289.30 1.70 1.16 1.64 Main zone

AS-19-740 646 374 5 340 256 3 296 194 -69 663.00 355.40 356.70 1.30 1.07 1.67 Blake River

598.50 601.50 3.00 2.48 1.00 Upper zone

623.00 625.20 2.20 1.84 1.82 Main zone

627.20 628.70 1.50 1.25 1.51 Main zone

633.90 638.10 4.20 3.52 1.53 Footwall zone

AS-19-741 645 963 5 340 058 3 305 191 -82 669.00 563.70 566.40 2.70 1.63 4.16 Upper zone

585.20 594.20 9.00 5.42 5.76 Lower Piché zone

Including (3) 585.20 586.20 1.00 0.60 39.20

610.00 611.20 1.20 0.73 10.90 Lower Piché zone

631.70 632.70 1.00 0.62 1.77 Main zone

635.10 641.60 6.50 4.03 1.92 Main zone

6585.25

Table 2: Rouyn Project Drilling Results - 2019 Astoria Area program

UTM NAD83 Zone 17

No significant results

No significant results

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

Notes:

1. True widths of intersections are estimated at 66-90% of the core interval approximately.

2. Drill hole intercepts are calculated with a lower cut of 1.00 g/t Au and may contain lower grade interval of up to 3 metres in

length.

3. Assays are reported uncut but high grade sub-intervals are highlighted.

4. Drill holes with the suffix W are wedge cuts from previously drilled master holes.

Figure 1: Rouyn Gold – Lac Gamble zone longitudinal section and highlighted 2020 assay results.

YORBEAU RESOURCES INC.

110 Place Crémazie O, Suite 503, Montréal, QC, H2P 1B9

www.yorbeauresources.com

Figure 2: Rouyn Gold – Astoria area longitudinal section and highlighted 2019 assay results.