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Loryser Reorganisation Proceedings and Creditor Protection Sought for Uruguayan Operations; Colombian Exploration Continues Forward

Legal & Disputes

Loryser Reorganisation Proceedings and Creditor Protection Sought for Uruguayan

Operations; Colombian Exploration Continues Forward

MONTEVIDEO, Uruguay, June 15th, 2018. Loryser S.A. (“Loryser”), the operating subsidiary of Orosur Mining

Inc. (“Orosur” or “the Company” ) (TSX/AIM: OMI), a South American-focused gold producer , developer and

explorer announces that it has applied to commence reorganisation proceedings (the “Loryser Reorganisation

Proceedings”) under Uruguayan legislation (Act N°18.387).

The San Gregorio mine and processing complex has been in operation since 1997 and has produced

approximately 1.5Moz of gold during this time. Since late 2017, Orosur has been hindered by operational

challenges in its San Gregorio Underground Mine (“SG UG”) in Uruguay. The scarcity of alternative sources

of ore has made it difficult to reverse this situation which is resulting in financial liquidity constraints . To

continue the mineplan, a swift and timely transition from SG UG to the Veta A underground project would be

needed, which itself would require external financing and the environmental permit in Veta A which are

currently not yet available.

As a result of the current circumstances , the Board of Directors has been actively exploring a number of

alternatives for Orosur and its subsidiaries. The decision to apply for the Loryser Reorganisation Proceedings

and creditor protection was made in consultation with the Company’s legal and financial advisors and is in the

best interests of Loryser, the Company and their stakeholders. This request for commencement of the Loryser

Reoganization Proceedings was applied for by Loryser on June 14th, 2018, from the Reorganization Court in

Montevideo (the “Court”). The Court is expected to take several days to assess whether the necessary

requirements are met to declare the start of the Loryser Reorganisation Proceedings.

Orosur and its subsidiaries ( excluding Loryser) are not included in the Loryser Reorganisation Proceedings

and the Company’s management team will continue to lead day-to-day operations.

Loryser expects to continue production at SG UG until the end of July after which it intends to place the mine

in care and maintenance. Loryser will remain able to enter into transactions with its suite of Uruguayan assets.

Through the course of its operations in Ur uguay, the Company has been fortunate to have enjoyed a very

positive relationship with the Government and even received two royalty exem ptions in recent years. Orosur

is currently conducting conversations with the Government to analyse different options to continue its

operations in Uruguay, which represent a very important source of investment and employment in the north of

the country.

The Company plans to continue to advance its Colombian gold exploration program and believes that the

Loryser Reorganisation is the best option by which to return Orosur to a stable situation while focusing its

efforts on unlocking the value of its exciting Colombian gold exploration asset. As of June 14th, 2018, excluding

Loryser assets and liabiliti s, the Company had total cash a nd cash equi valents of US$ 174,000 and zero

financial debts.

Ignacio Salazar, CEO of Orosur, said:

“The decision to commence the Loryser Reorganisation Proceedings is a strategic one that we believe will

best protect our business and preserve cash while we endeavour to ach ieve the best possible outcome for

our Company, employees, suppliers, other business partners and stakeholders. By commencing the Loryser

Reorganization Proceeding s, the Company preserves its ability to enter into any number of potential

transactions which may be beneficial to our stakeholders.

We intend to treat all our st akeholders with the utmost respect and care through the Loryser Reorganisation

Proceedings process with every intention of arriving at a fair and balanced plan in a swift time period while

allowing the Company to continue advancing its Anzá project in Colombia.”

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About Orosur Mining Inc.

Orosur Mining Inc. (TSX: OMI; AIM: OMI) is a fully integrated gold producer, developer and explorer focused

on identifying and advancing gold projects in South America. The Company operates the only producing gold

mine in Uruguay (San Gregorio) and has assembled an exploration portfolio of high quality assets in Uruguay,

Chile and Colombia.

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

Cantor Fitzgerald Europe – Nomad & Joint Broker

David Porter/Keith Dowsing

Tel: +44 (0) 20 7894 7000

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.

Forward Looking Statements

All statements, other than statements of historical fact, contained or incorporated by reference in this news

release, including any information as to the future financial or operating performance of the Company,

constitute "forward -looking statements" wit hin the meaning of certain securities laws, including the "safe

harbour" provisions of the Securities Act (Ontario) and the United States Private Securities Litigation Reform

Act of 1995 and are based on expectations estimates and projections as of the dat e of this news release.

There can be no assurance that such statements will prove to be accurate. Such statements are subject to

significant risks and uncertainties, and actual results and future events could differ materially from those

anticipated in suc h statements. Forward -looking statements include, without limitation the expectation to

continue to operate the business as usual while meeting commitments to employees, suppliers and customers;

continuing exploration on the Colombian gold exploration; availability of alternative options; and a declaration

by the Court. . 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.