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Orosur Mining Inc. - Brazil Update JV signed with Meridian Mining on Ariquemes Tin Project in Brazil Company to earn 75% equity interest by investing US$3m over four years.

Property Options & Staking Partnerships & JV

Orosur Mining Inc. - Brazil Update

JV signed with Meridian Mining on Ariquemes Tin Project in Brazil

Company to earn 75% equity interest by investing US$3m over

four years.

London, January 14 th, 2022. Orosur Mining Inc. ("Orosur" or the

"Company") (TSX-V/AIM:OMI), is pleased to announce that it has signed a

Joint Venture (JV) agreement with Meridian Mining UK Societas (TSXV:

MNO) (Frankfurt: 2MM) (Tradegate: 2MM) (OTCQB: MRRDF) ("Meridian")

in relation to the Ariquemes tin project ("Project") in Brazil.

The JV terms are largely in line with those indicated in the Letter of Intent

("LOI") signed and announced on July 7 th 2021, in which the Company can

earn an equity interest of 75% in the Ariquemes project by spending US$3m

over a four-year period, in two phases:

1. Phase 1 - earn 51% interest by spending US$1 million over a 24-

month period.

2. Phase 2 - earn an additional 24% interest by spending US$2 million

over a subsequent 24-month period.

3. Following this point, the two parties would jointly fund the Project on

a pro-rata basis or dilute to a net smelter royalty.

The JV will require the establishment of two new corporate entities to hold

the exploration licences and applications, which will include a top holding

company in Canada, and a local operating company in Brazil. This process

will commence immediately but may take several months to complete, at

which time the granted licences will begin to be transferred across to the new

structure and the JV can formally commence.

In the meantime, the Company will immediately commence desktop

exploration work, data compilation, regional targeting, formulation of

exploration plans and budgets and logistical planning. Members of the

Company's board, executive and technical specialists will be on site in the

coming days to commence the process.

Further details of the Project and plans will be communicated following this

visit.

Ariquemes

The Ariquemes project comprises a large collection of granted tenements

and applications, totalling almost 3,000km 2, in Rondônia State, western

Brazil. The licenses were all accumulated and owned 100% by Meridian (via

its local subsidiary) and represent the dominant land position in the Rondônia

Tin Province, one of the world's most significant tin regions.

The region was identified by Meridian following extensive conceptual work,

with later regional work confirming the Project's potential. An extensive

database of historical and recent exploration data is available and has been

reviewed by the Company.

The Company has approximately US$5 million cash on its balance sheet and

is therefore well placed to fund the initial works from its existing resources.

Orosur CEO Brad George commented:

"We are excited to have finally completed this agreement. With Anza

handed over and Covid finally abating, the ability to move to a new phase of

work for the Company is something we have been anticipating for some time.

"Ariquemes represents a tremendous opportunity with a huge land holding

in a proven district, for one of the sector's most important, and yet overlooked

commodities."

For further information, please contact:

Orosur Mining Inc

Louis Castro, Chairman,

Brad George, CEO

[email protected]

Tel: +1 (778) 373-0100

SP Angel Corporate Finance LLP - Nomad & Joint Broker

Jeff Keating / Caroline Rowe

Tel: +44 (0) 20 3 470 0470

Turner Pope Investments (TPI) Ltd - Joint Broker

Andy Thacker

JamesPope

Tel: +44 (0)20 3657 0050

Flagstaff Strategic and Investor Communications

Tim Thompson

Mark Edwards

Fergus Mellon

Tel: +44 (0) 207 129 1474

[email protected]

The information contained within this announcement is deemed by the Company to constitute inside

information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 ('MAR') which has been

incorporated into UK law by the European Union (Withdrawal) Act 2018. Upon the publication of this

announcement via Regulatory Information Service ('RIS'), this inside information is now considered to be in the

public domain.

About Orosur Mining Inc.

Orosur Mining Inc. (TSX-V: OMI; AIM: OMI) is a minerals explorer and developer focused on identifying and

advancing projects in South America. The Company currently operates in Colombia, Brazil and Uruguay.

Forward Looking Statements

All statements, other than statements of historical fact, contained in this news release constitute "forward looking

statements" within the meaning of applicable securities laws, including but not limited to the "safe harbour"

provisions of the United States Private Securities Litigation Reform Act of 1995 and are based on expectations

estimates and projections as of the date of this news release.

Forward-looking statements include, without limitation, the exploration plans in Colombia and the funding from

Monte Águila of those plans, Monte Águila´s decision to continue with the Exploration and Option agreement, the

ability for Loryser to continue and finalize with the remediation in Uruguay, the ability to implement the Creditors'

Agreement successfully as well as continuation of the business of the Company as a going concern and other

events or conditions that may occur in the future. The Company's continuance as a going concern is dependent

upon its ability to obtain adequate financing, to reach profitable levels of operations and to reach a satisfactory

implementation of the Creditor´s Agreement in Uruguay. These material uncertainties may cast significant doubt

upon the Company's ability to realize its assets and discharge its liabilities in the normal course of business and

accordingly the appropriateness of the use of accounting principles applicable to a going concern. 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 forward looking statements. Such statements are subject to significant risks and

uncertainties including, but not limited, those as described in Section "Risks Factors" of the MDA and the Annual

Information Form. The Company disclaims any intention or obligation to update or revise any forward-looking

statements whether as a result of new information, future events and such forward-looking statements, except to

the extent required by applicable law.