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Bonterra intersects 16.5 g/t Au over 2.7 m, including 29.5 g/t over 1.0 m in a New Zone northeast of the Barry Gold Deposit

Drill Results

2872 Sullivan Road, Suite 2

Val‐d’Or, Quebec

Office: (819) 825‐8678

Bonterra intersects 16.5 g/t Au over 2.7 m, including 29.5 g/t over 1.0 m

in a New Zone northeast of the Barry Gold Deposit

Val-d’Or, QC – September 08, 2021 – Bonterra Resources Inc. (TSX-V: BTR, OTCQX: BONXF,

FSE: 9BR2) (“Bonterra” or the “Company”) is pleased to announce results from the ongoing drilling

campaign at the Barry project. Recent drilling results expand upon the northeast sector of the Barry

deposit near surface and at depth (Figures 1 and 2). The latest results encompass 13 diamond drill holes

designed to expand the 2021 mineral resource estimate (“2021 MRE”) released in June (see press release

dated June 23, 2021). Drilling highlights include 16.5 g/t gra ms-per-tonne gold (“ g/t Au”) over 2.7

metres (“m”) in a new zone named H16, immediately northeast of the 2021 MRE.

The Company is currently drilling at a rate of approximately 6, 000 m per month, focused on its main

gold deposits to expand upon the recently released 2021 MREs. In addition, work on the preliminary

economic assessment (“PEA”), which would utilize the exis ting Bachelor Mill as a central processing

facility is ongoing and is expected to be completed in Q4 2021.

Highlights include:

 16.5 g/t Au over 2.7 m, including 29.5 g/t over 1.0 m and 4.5 g/t over 2.0 m in MB-21-355

 0.7 g/t Au over 55.0 m, including 7.5 g/t Au over 1.5 m and 3.6 g/t Au over 3.9 m in MB-21-359

 16.0 g/t over 0.6 m and 12.6 g/t over 0.5 m in MB-21-368

 5.9 g/t Au over 5.3 m, including 22.0 g/t over 0.9 m in MB-21-369

 4.8 g/t over 2.0 m, including 18.4 g/t over 0.4 m in MB-21-376

Pascal Hamelin, CEO commented: “The results released today supp ort our view that substantial near

surface exploration potential exists at Barry. Recent explorat ion drilling hit both thick, continuous

mineralization at open pit depth and high-grade intervals withi n 200 m depth immediately adjacent of

the 2021 MRE. We look forward to receiving more diamond drill results from this area soon.”

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Figure 1 – Barry Project - Drill Hole Location Map.

See Figure 2 for details of drill holes in the northeast sector of the Barry deposit

Figure 2 – Barry Project – Drill Hole Location Detailed Map

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The Barry drilling campaign is currently focused on the expansion of key gold mineralized zones around

the 2021 MRE. Multiple diamond drill holes tested open pit pot ential to the northeast of the open pit

resource shell in the 2021 MRE and followed up on deeper interc epts in hole MB-20-323 in the same

sector (see press release dated March 1, 2021). Near-surface mineralization above open pit cut-off grade

was intercepted up to 100 m north east of the existing pit shell (Table 1, Figures 2, 3 and 4).

Mineralization remains open to t he east. Drilling also confirm ed the presence of several H-type zones

north of the 1000 zone, returning high-grade intercepts at less than 200 m depth and laterally within 50

to 250 m of the existing resource along the 1000 zone (Table 1, Figures 2, 3 and 4). Follow-up drilling

on these very promising targets is expected to begin soon in or der to better define their geometries.

Several drill holes also continued to test extensions of the H series structures to the southwest, with

success along the H3 zone, outlining continued potential at depth (Table 1 and Figure 1).

Figure 3 – Barry Project – Composite Cross Section (MB-21-357, MB-21-358, MB-21-359, MB-

21-360, MB-21-362)

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Figure 4 – Barry Project – Composite Cross Section (MB-21-355, MB-21-368, MB-21-369, MB-

21-370)

Barry Deposit Geology

The Barry gold deposit is characterized by three dominant sets of structures, all dipping to the south-

east. The sub-vertical shear zone s and the H-Series shear zone s dipping 25 to 40 degrees are hosted

within intermediate to mafic volcanics and tuffs with local felsic intrusions. Contact zones dip at 50-65

degrees along the lower and upper contacts of the D1, D2 and D3 felsic intrusions with mafic volcanics.

Gold mineralization is associated with disseminated sulfides wi thin shear zones and veins with local

visible gold. The Barry deposit has been delineated over 1.4 kilometres along strike and 700 m vertical

and remains open for expansion.

Table 1: Barry Drillhole Results Highlights

Hole ID From (m) To (m) Length (m) Grade (g/t Au) Zone

MB-21-352 Results Pending

MB-21-353 Results Pending

MB-21-354 95.5 101.5 6.0 0.6 Intrusive Stockwerk

197.0 204.0 7.0 1.3 D2

including 201.5 204.0 2.5 2.5 D2

211.5 212.2 0.7 1.3 D2

MB-21-355 14.0 19.0 5.0 2.5 AB7

including 17.0 19.0 2.0 4.5 AB7

25.6 28.6 3.0 1.5 AB7

including 26.8 27.3 0.5 4.6 AB7

39.5 48.0 8.5 1.4 AB8

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Hole ID From (m) To (m) Length (m) Grade (g/t Au) Zone

195.2 201.3 6.1 0.7 New H structure

including 200.7 201.3 0.6 3.7 New H structure

239.3 242.0 2.7 16.5 H16

including 240.0 241.0 1.0 29.5 H16

MB-21-356 Results Pending

MB-21-357 No significant Assays

MB-21-358 190.0 195.9 5.9 1.3 H16

including 193.4 194.8 1.4 3.6 H16

MB-21-359 6.0 61.0 55.0 0.7 AB7/AB8

including 59.5 61.0 1.5 7.5 AB8

78.1 79.1 1.0 0.6 Vertical structure

113.0 115.8 2.8 0.7 1000

139.0 140.7 1.7 1.0 Vertical structure

148.0 148.8 0.8 4.5 New H structure

186.4 187.8 1.4 0.7

191.3 195.2 3.9 3.6 New H structure

243.6 248.3 4.7 0.8 H16

MB-21-360 103.2 104.3 1.1 0.5

183.2 188.2 5.0 2.4 New H structure

including 183.2 184.1 0.9 5.0 New H structure

MB-21-361 Results Pending

MB-21-362 7.8 8.3 0.5 0.8 AB7

120.9 124.5 3.6 0.6 New H structure

including 123.2 123.9 0.7 1.4 New H structure

176.8 177.6 0.8 3.0 H16

197.9 199.2 1.3 0.6

MB-21-363 Results Pending

MB-21-364 Results Pending

MB-21-365 Results Pending

MB-21-366 Results Pending

MB-21-367 192.4 193.2 0.8 0.7 New H structure

MB-21-368 16.0 23.9 7.9 1.7 AB7

Including 17.0 17.6 0.6 16.0 AB7

28.4 33.7 5.3 2.1 AB8

Including 30.0 31.0 1.0 6.5 AB8

39.0 39.5 0.5 1.1

197.8 198.3 0.5 12.6 New H structure

MB-21-369 8.5 30.3 21.8 0.6 AB7/AB8

Including 25.9 29.7 3.8 1.3 AB8

110.9 116.5 5.6 1.2 New H structure

146.4 148.4 2.0 1.6 New H structure

234.3 234.8 0.5 1.7

274.0 279.3 5.3 5.9 H16

including 277.7 278.6 0.9 22.0 H16

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Hole ID From (m) To (m) Length (m) Grade (g/t Au) Zone

300.5 301.4 0.9 0.6

MB-21-370 236.0 237.0 1.0 0.9 H16

MB-21-371 84.9 87.0 2.1 0.7

111.8 112.7 0.9 3.1 Vertical structure

248.0 251.0 3.0 1.1 H16

including 250.5 251.0 0.5 5.1 H16

312.0 312.7 0.7 0.6

MB-21-372 Results Pending

MB-21-373 Results Pending

MB-21-374 Results Pending

MB-21-375 Results Pending

MB-21-376 739.0 741.0 2.0 4.8 H3

including 740.5 741.0 0.5 18.4 H3

846.2 848.6 2.4 1.1 H12

including 847.6 848.1 0.5 3.8 H12

MB-21-377 Results Pending

MB-21-378 807.4 809.1 1.7 0.9 H12

MB-21-379 Results Pending

Notes:  

1) The length represents the interval of the drilled core.

2) True widths are estimated to be greater than 55% of the drill intersection length.

3) The shown mineralized intervals listed are above 0.5 g/t Au.

4) Gold results obtained below <0.1 g/t Au are represented as no significant values.

Quality Control and Reporting Protocols

The Barry project’s drill core gold analyses are performed at t he Company’s Bachelor Mine analytical

laboratory (the “Laboratory”). The Company employs a rigorous QA-QC analysis program that meets

industry standards. The analyses are carried out by fire assay (A.A.) with atomic absorption finish.

Blanks, duplicates, and certified reference standards are inser ted into the sample stream to monitor the

Laboratory’s performance. The Com pany's QA-QC program requires that at least 10% of samples be

analyzed by an independent laboratory. These verification samples are sent to ALS Minerals laboratory

facility located in Val-d'Or, Quebec. The verifications show a high degree of correlation with the

Laboratory’s results.

Qualified Person

Marc Ducharme, P.Geo. and Bonterra’s Exploration Manager, has compiled and approved the information

contained in this press release. Mr. Ducharme is a qualified person as defined by NI 43-101.

About Bonterra Resources Inc.

Bonterra is a Canadian gold exploration company with a large portfolio of advanced exploration assets

anchored by a central milling facility in Quebec, Canada. The Company has four main assets, Gladiator,

Barry, Moroy, and Bachelor that collectively have a total of 1. 24 million ounces in Measured and

Indicated categories, and 1.78 million ounces in Inferred category. Importantly, the Company owns the

only permitted and operational gold mill in the region that is currently estimated at 75% through the

permitting process to expand from 800 to 2,400 tonnes-per-day. Bonterra is focused on graduating from

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advanced exploration to a development company over the next 18- 24 months to deliver shareholder

value.

FOR ADDITIONAL INFORMATION

Pascal Hamelin, President & CEO

[email protected]

2872 Sullivan Road, Suite 2, Val d’Or, Quebec J9P 0B9

819-825-8678 | Website: www.btrgold.com

Neither 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.

Cautionary and Forward-Looking Statements

This news release contains "forw ard-looking information" within the meaning of the applicable Canadian securities

legislation that is based on expectations, estimates, projectio ns and interpretations as at the date of this news release. An y

statement that implies predictions, expectations, interpretations, opinions, plans, projections, objectives, assumptions, future

events or performance (often usi ng words such as “expects” or “ does not expect”, “is expected”, “interpreted”, “in

management's opinion”, “anticipates”, or “plans”, “budget”, “sc hedule”, “forecasts”, statements that certain actions, events

or results “may”, “could”, “should”, “would”, “might” or “will” be taken, occur or be achieved) is not a statement of historical

fact and may constitute forward-looking information and is inte nded to identify forward-looking information. This news

release may contain forward-looking information relating to, am ong other things, the outlook for the Gladiator, Barry, and

Moroy projects; updated mineral resources; the deposit remainin g open laterally and at depth; and future drilling. These

factors include, but are not limited to, risks associated with the ability of exploration activities (including drilling results) to

accurately predict mineralization; the Company's ability to obt ain required approvals; the results of exploration activities;

risks associated with mining operations; global economic condit ions; metal prices; dilution; environmental risks; and

community and non-governmental actions. Although the forward-looking information contained in this news release is based

on assumptions that management believes are reasonable at the t ime of release, Bonterra cannot assure shareholders and

prospective purchasers of the Company's securities that actual results will be consistent with the forward-looking information,

as there may be other factors that cause results not to be as a nticipated, estimated or intended, and neither Bonterra nor any

other person assumes responsibility for the accuracy or completeness of forward-looking information. All statements made,

other than statements of historical fact, that address the Comp any's intentions and the events and developments that the

Company anticipates, are considered forward-looking statements. Although t he Company believe s t hat the e xpectations

expressed in such forward-looking statements are based on reaso nable assumptions, such statements are not guarantees of

future performance, and actual results or developments may differ from those in the forward-looking statements.