LONDON - Orosur Mining Inc. ('Orosur' or the 'Company') (TSX: OMI) (AIM: OMI), is pleased to announce an update on the progress of Minera Anza's drilling campaign currently underway at the Company's Anza project in Colombia.

Results of first hole

Diamond drill hole ('DDH') MAP-072 commenced in mid-November 2020 and was planned largely as a verification hole to confirm the excellent results of previous drilling campaigns. While not a strict requirement, some level of verification is considered prudent when it is likely that older holes, drilled by previous companies may be incorporated into a mineral resource estimate.

Samples from MAP-072 were submitted for assay gradually over November and December, however as previously announced, assay results were delayed due to Covid-19 related staffing shortages at the ALS Laboratory in Lima, Peru. These delays are expected to continue for the foreseeable future but should not materially impact on operations.

MAP-072 was targeted at a part of the APTA deposit that had previously returned positive results, the nearest and most relevant being MAP-060, which returned an intersection of 25m @ 4.85 g/t Au (previously announced).

Orosur CEO Brad George commented: 'Clearly the assays from MAP-072 are very positive, and a resounding verification of previous excellent work. Delays in assay results are unfortunately beyond the Company's control and may be a factor for some time yet, however in the meantime, visual indications are positive and provide the team sufficient confidence to ramp up our drilling efforts in order to move APTA forward as quickly as possible.'

Contact:

Louis Castro

Tel: +1 (778) 373-0100

Email: info@orosur.ca

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulation ('MAR'). Upon the publication of this announcement via Regulatory Information Service, this inside information is now considered to be in the public domain.

About Orosur Mining Inc.

Orosur Mining Inc. (TSX: OMI; AIM: OMI) is a precious metals developer and explorer focused on identifying and advancing gold projects in South America. The Company operates in Colombia and Uruguay.

About the Anza Project

Anza is a gold exploration project, comprising three exploration licences, four exploration licence applications, and several small exploitation permits, totalling 207.5km2 in the prolific Mid-Cauca belt of Colombia.

The Anza Project is currently wholly owned by Orosur via its subsidiary, Minera Anza S.A.

The project is located 50km west of Medellin and is easily accessible by all-weather roads and boasts excellent infrastructure including water, power, communications and large exploration camp.

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 Aguila of those plans, Monte Aguila'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.

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