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Orosur Mining Inc. – Change of Nominated Adviser & Update

Management Changes

Orosur Mining Inc. – Change of Nominated Adviser & Update

Medellin, Colombia, April 1, 2019. Orosur Mining Inc. (“Orosur” or “the Company”) (TSX/AIM: OMI), a South

American-focused gold developer and explorer is pleased to announce that the Company has appointed, with

immediate effect, SP Angel Corporate Finance LLP as the Company's nominated adviser and joint broker.

Update on Colombia

Orosur has received from Newmont Mining the first of four half yearly US$500,000 cash payments as part of

the previously announced Exploration Agreement with Venture Option for the Anzá project, as well as

US$240,000 to fund the property maintenance costs in Colombia during the first 6 months of the exploration

period. In cooperation with Orosur, Newmont is performing a strategic review of the project to define an

exploration program in the area.

Update on Uruguay

As announced on 18 December 2018, Loryser SA (“Loryser”), the Company’s Uruguayan subsidiary, reached

an agreement with the majority of its creditors (“the Agreement”). At that time, 68% of the creditors by value

had executed the Agreement. Loryser has continued to receive support for its plan in recent months from

additional creditors, increasing the endorsement of the Agreement at the date of this announcement to

approximately 72% of creditors by value, comprising 67 different creditors.

Pursuant to the Uruguayan Reorganization Act, the reorganisation process and the Agreement are subject to

consideration by the Court and the Intervenor, and the normal formal procedures for approval. As part of the

reorganisation process, the Intervenor has been reviewing the legitimity of the creditors´ debt claim in order to

prepare the final list of creditors. Out of more than 150 creditors, only a small minority is still under discussion

and review due to minor formalities. The process will continue by the Court confirming formally that the

majorities required for the Agreement were effectively obtained, which will be followed by public notice of the

Agreement to all interested parties. Provided there is no valid opposition, the Court will proceed to ratify the

Agreement and the ratification process is expected to conclude during the first half of 2019. Once approved

by the Court, the Agreement will be legally binding on all the creditors and Loryser’s creditor protection status

will cease together with Intervenor’s control over Loryser.

Loryser has started part of the work included in the Agreement, specifically advancing the remediation of the

tailings dam and dewatering approximately 700,000 cubic metres, equivalent to 26 hectares of the total 40

hectares covered by the dam. In parallel, Loryser is starting to cover with gravel the dry area of the tailings

dam.

Loryser has been running a process to recover the scavenger gold from the San Gregorio CIL plant in

cooperation with Goldplat Recovery Ghana Ltd/Goldplat Plc and some 160 Au oz have been recovered so far.

The analysis continues of the potential additional gold remaining in the San Gregorio complex.

Update on Chile

Following the relinquishment by Fortune Valley Resources Chile S.A. (“FVRC”) (an indirect, wholly-owned

subsidiary of Orosur) of the Pantanillo project located in Chile, Anglo American Inversiones SA, sought the

payment of minimum royalties totalling US$3 million and requested arbitration in September, 2017. Arbitration

proceedings were conducted in Santiago, Chile. On March 28, 2019, the Arbitral Tribunal rendered its

decision, ruling that FVRC is required to pay Anglo approximately US$1.6 million plus interests at Chile´s

current interest rate calculated from December 2015 until its effective payment. The Tribunal´s decision is

exclusively against FVRC. Orosur was not named in the decision from the Tribunal nor was Orosur a party to

the relevant agreements. FVRC is evaluating its options with its Chilean lawyers.

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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.

For further information, please contact:

Orosur Mining Inc

Ignacio Salazar, Chief Executive Officer

Ryan Cohen, VP Corporate Development

[email protected]

Tel: +1 (778) 373-0100

SP Angel Corporate Finance LLP – Nomad & Joint Broker

Jeff Keating/ Stephen Wong

Tel: +44 (0)20 3 470 0470

Numis Securities Limited – Joint Broker

John Prior / James Black / Paul Gillam

Tel: +44 (0) 20 7260 1000

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. If you have any queries on this,

then please contact Ryan Cohen, VP Corporate Development of the Company (responsible for arranging release of this

announcement on behalf of the Company) on: +1 (778) 373-0100.