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Update on ICSID Arbitration against the Government of Tanzania for the Expropriation of the Wigu Hill project

Legal & Disputes

Update on ICSID Arbitration against the Government of Tanzania for the

Expropriation of the Wigu Hill project

Toronto, Ontario – April 12, 2022 – Montero Mining and Exploration Ltd. (TSX-V: MON) (“Montero” or the

“Company”) provides the following updat e on the arbitration proceedings against the United Republic of Tanzania

(“Tanzania”) over Tanzania’s expropriation of the Wigu Hill rare earth element project before International Centre

for Settlement of Investment Disputes’ (“ICSID”).

The arbitral tribunal is composed of Dr Achille Ngwanza, the President, Mr Eric Teynier, appointed by Montero and

Mr Cecil W. M. Abraham, appointed by Tanzania . It held its first session together with the Parties on 17th January

2022, on which procedural issues were discussed and agreed, including the timeline of the proceedings.

On 18 February 2022 the arbitral tribunal issued Procedural Order No 1 , with a definitive timetable. Montero will

file its Memorial on the merits of its c ase and the valuation of damages claimed in May 2022. The place of the

arbitration is Washington DC.

Montero has retained as legal counsel Mr Thierry Lauriol and his team at Jeantet AARPI and Dr Neal Rigby of SRK

Consulting (US) Inc. as quantum expert. Dr Rigby has acted in this capacity and as mining and valuation expert in

many international mining disputes that have been resolved through ICSID arbitrations . Montero obtained dispute

funding from Omni Bridgeway, a leading global dispute funder.

Montero’s Wigu Hill Rare E arth Element Retention Li cense was expropriated by the Tanzanian government in

2018. The Compa ny has expended significant out of pocket costs on exploration activit ies on the project since

March 2008 , and its exp loration and development of the projec t has created considerable valu e for Tanzania .

Montero initiated international arbitration proceedings on the 8 th January 2021 through ICSID in accordance with

the Bilateral Investment Treaty between Canada and the United Republic of Tanzania which protects inve stment

rights. The Company seeks compensation b ased on the damages it suffered from the Tanzanian government’s acts

and omissions.

Dr Tony Harwood, Presiden t and CEO of Montero says: “While we are pur suing this significant claim for damages

and compensation, the Company has divested from Tanzania to focus on the exploration and development in Chile,

a tier 1 mining investment destination.”

For further information, please see the Montero press release (NR119 dated 8th January 2021 and NR132 dated

29th November 2021) and the ICSID website.

(https://icsid.worldbank.org/services/arbitration/convention/process/overview).

Qualified Person's Statement

This press release was reviewed and a pproved by Mr. Mike Evans, M.Sc. Pr.Sci.Nat ., a qualified person for the

purpose of National Instrument 43 -101. It has also been reviewed by Mr Thierry Lauriol, avocat à la cour (Paris,

France).

About Montero

Montero is a junior exploration company focuse d on findi ng, explo ring, and advancing globally significant gold ,

silver and base metal deposits in Chile. Montero’s board of directors and m anagement have an impressive track

record of successfully discovering and advancing precious metal and copper projects. Montero trades on the TSX

Venture Exchange under the symbol MON and has 38,647,485 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, stateme nts, projections

and estimates with respect to the Share Consolidation. Generally, forward-looking information can be identified by the use of forward -looking

terminology such as “plans”, “expects” or “does not e xpect”, “is expected”, “budget”, “scheduled” , “estimates”, “forecasts”, “intends”,

“anticipates” or “does not antic ipate”, or “believes”, or variations of such words and phrases or state that certain actions, events or results

“may”, “could”, “would”, “mig ht” or “will be taken”, “occur” or “be achie ved”. 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 relat ing to, among other things,

completion of the agreement, results of exploration, project development , reclamation a nd capital costs of Montero’s mineral properties, and

financial condition and prospects, could differ materially from those currently anticip ated in such statements for many reasons suc h as: an

inability to complete the agreement 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; litigat ion, legislative, environmental and other ju dicial, regulatory, political and

competitive developments; technological and ope rational difficulties encountered in connection with Montero’s activities; and other matters

discussed in this news release and in filings made with securities regulators. Thi s 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 doe s not undertake to update any forward -looking information, except in ac cordance with

applicable securities laws.