Montero Makes Option Payment and Readies Isabella GOLD Silver Project IN Chile FOR Drilling

MONTERO MAKES OPTION PAYMENT AND READIES

ISABELLA GOLD SILVER PROJECT IN CHILE FOR DRILLING

Toronto, Ontario – September 15, 2020 – Montero Mining and Exploration Ltd. (TSX-V: MON) has

initiated exploration of the Isabella gold silver project located approximately 200 km south of Santiago

and 125 km south of Yamana’s Minera Florida mine in the Southern Coastal Range of Chile. The

Company has tied up mineral rights to exploration claims that cover an area of 67 km 2 and make up the

Isabella Gold Silver Project. To date Montero has defined four high grade Au-Ag priority targets for initial

drill testing and a sedimentary polymetallic geophysical target within the Isabella West and Isabella East

claims. On August 30, 2020 Montero completed a US$50,000 option payment on the Isabella East

claims. No drilling has ever been carried out at Isabella.

Dr. Tony Harwood, President and Chief Executive Officer of Montero commented, “Montero has initiated

a confirmatory sampling program at the Isabella gold project. The program is designed to better define

the extent of the gold silver vein structures and to investigate a geophysical target in the sediments

recently identified by Montero. A diamond drilling program is planned.”

Isabella Gold - Silver Vein Targets

A total of four target areas have been identified and are slated for drilling using a track-mounted

diamond drill (Figure 1). A 2,600m drill program is planned to test the vein targets. Initial drilling will

test one mineralized quartz vein array within the Isabella West property (Target A) and three vein arrays

within the Isabella East property (Targets B, C, and D).

Drill Target A (Isabella West): Multiple high grade Au-Ag quartz veins have been defined within a 75m

wide zone of altered granite extending 600m along strike. Surface samples of vein material returned

assays up to: 8.53 g/t Au, 11.2 g/t Ag and 7.56 g/t Au, 16.8 g/t Ag. Trenches completed over 300m strike

length of the vein array returned: 6.92 g/t Au over 1m, 2.88 g/t over 2m, and 1.42 g/t Au over 12m (incl.

3.53 g/t Au over 3m). The vein array is contained within a broader zone of anomalous Pb defined as

>100 ppm which is characteristic of the high-grade Au veins in the area.

Drill Target B (Isabella East): Multiple high-grade quartz veins identified over a zone 100m wide x 250m

in length. Surface samples of vein material returned assays up to: 26.76 g/t Au, 31.8 g/t Ag. Several

veins have been mapped over a distance of 250m. An assay of 21 g/t Au, 70 g/t Ag was also obtained

from a 1.5m wide vein exposed in an exploration adit completed by the property owner. Trench

sampling returned 6.5 g/t Au over 5m, incl. 21.85 g/t Au over 1m.

Drill Target C (Isabella East): Multiple high-grade quartz veins over 200m wide zone. Surface assays up

to 48 g/t Au and 362 g/t Ag were returned from vein material sampled along 250m strike length.

Drill Target D (Isabella East): Multiple high-grade quartz veins defined over area 50m wide and 150m in

length. Surface samples of vein material returned assays up to 12.55 g/t Au, 629 g/t Ag. Trench

sampling returned 2.72 g/t Au, 204 g/t Ag over 1m.

Isabella Sediment Hosted Polymetallic Target Identified

Processing of data from the 101 line kilometer, drone-supported aerial magnetic survey completed by

the previous owner has identified an extensive area of high magnetics within sediments proximal to the

granitic contact. Montero contracted John Coggan of Mines Geophysical Services to reinterpret the

magnetic data and magnetic high anomaly at depth (Figure 2). Previous mapping over this area has

identified discrete zones of Fe-oxide breccia boulders (gossan) which have returned assays up to 800

ppm Zn and 400 ppm Cu. Montero considers such concentrations in gossan boulders to be anomalous

and the Company will further evaluate the area for potential sedimentary polymetallic geophysical

target by drilling. A 240m drill hole is planned to test the newly identified magnetic target.

Montero has a 100% interest in a Chilean private company (“ChileCo”) which holds all the mineral rights

to the Project. ChileCo directly holds 100% of the mineral rights to 18 km 2 of claims and has two

subsidiaries with 49 km2 under option agreements: 1) ChileCo holds an 85% interest in the Isabella West

claims and; 2) ChileCo is earning an 85% interest in the Isabella East claims. Montero paid US$50,000 on

August 30, 2020 with further payments of US$400,000 due by August 2022 to complete the 85% earn-in.

Qualified Person

This press release was reviewed and approved by Mr. Michael Corey P.Geo., whom is a member of the

Association of Professional Geoscientists of Ontario (APGO) and is a Qualified Person for the purpose of

National Instrument 43-101 and a technical advisor to Montero. Mr. Corey has visited the property and

reviewed previous sampling techniques and analysis. A data review was also undertaken by Marcial

Vergara B.Sc. who is based in Chile and also a Qualified Person. The qualified persons have extensive

experience in gold exploration in Chile.

About Montero

Montero is a junior exploration company focused on finding, exploring and advancing globally significant

gold deposits in Chile. The Company is in the process of relinquishing its portfolio of battery metal

projects in Africa to focus on gold opportunities in Chile. Montero’s board of directors and management

have an impressive track record of successfully discovering and advancing precious metal projects.

Montero trades on the TSX Venture Exchange under the symbol MON and has 21,880,818 shares

outstanding.

For more information, contact:

Montero Mining and Exploration Ltd.

Dr. Tony Harwood, President and Chief Executive Officer

E-mail: [email protected] Tel: +1 416 840 9197 | Fax: +1 866 688 4671 www.monteromining.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 STATEMENT REGARDING FORWARD-LOOKING INFORMATION: This news release includes certain "forward-looking information"

within the meaning of applicable Canadian securities laws. Forward looking information includes, but is not limited to, statements, projections

and estimates. Generally, forward-looking information can be identified by the use of forward-looking terminology such as “plans”, “expects” or

“does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates” or “does not anticipate”, or

“believes”, or 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”. Such information is based on information currently available to Montero and Montero provides no assurance

that actual results will meet management's expectations. Forward-looking information by its very nature involves inherent risks and

uncertainties that may cause the actual results, level of activity, performance, or achievements of Montero to be materially different from those

expressed or implied by such forward-looking information. Actual results relating to, among other things, completion of the HOA, results of

exploration, project development, reclamation and capital costs of Montero’s mineral properties, and financial condition and prospects, could

differ materially from those currently anticipated in such statements for many reasons such as: an inability to complete the HOA on the terms as

announced or at all; changes in general economic conditions and conditions in the financial markets; changes in demand and prices for

minerals; litigation, legislative, environmental and other judicial, regulatory, political and competitive developments; technological and

operational difficulties encountered in connection with Montero’s activities; and other matters discussed in this news release and in filings made

with securities regulators. This list is not exhaustive of the factors that may affect any of Montero’s forward-looking statements. These and

other factors should be considered carefully and accordingly, readers should not place undue reliance on forward-looking information. Montero

does not undertake to update any forward-looking information, except in accordance with applicable securities laws.

Figure 1: Isabella Gold–Silver Property – Shows Priority Drill Target Areas

Figure 2: Processing of UAV magnetic survey data has defined an area of high magnetics (view vertically

down above) in sediments adjacent to the granite contact. Montero is proposing a drill hole to test the

magnetic body for potential sediment-hosted mineralization

ISABELLA

EAST

ISABELLA

WEST