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Orosur Mining Inc - Colombia update and Exercise of Options

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Orosur Mining Inc - Colombia update and Exercise of Options

• Drilling commenced at Pepas

• Two additional rigs being imported for deep drilling

London, April 25th, 2022 . Orosur Mining Inc. ("Orosur" or the

"Company") (TSXV/AIM:OMI), is pleased t o announce an update on the

progress of the drilling campaign underway at the Company's Anzá project

in Colombia.

The Anzá project is currently the subject of an Exploration Agreement with

Venture Option (Exploration Agreement) with Colombian company Mi nera

Monte Águila (MMA). MMA is itself a 50/50 JV between Newmont

Corporation ("Newmont") (NYSE:NEM, TSX:NEM) and Agnico Eagle Mines

Limited ("Agnico") (TSX:AEM), and is the Colombian vehicle by which these

two companies jointly exercise their rights and obligations with respect to the

Exploration Agreement over the Anzá Project.

MMA is the operator of the Anzá Project after exercising its right to assume

operational control in the second half of 2021.

Drilling recommenced at Anzá in October 2020, and since that time, 35 holes

(MAP-072 to MAP-105) have been drilled at the central APTA project for a

total of 15,195 metres.

Following completion of hole MAP -105, that rig has now been mobilised to

the NE of the project area and has commenced work at the Pepas prospect

(figure 1).

Preparations for drilling at Pepas had been underway for some time, with all

necessary permitting processes having commenced some months ago. The

area is rugged and has required a substantial degree of preparation for

access including a minor degree of helicopter support to move the rig into

the vicinity of the Pepas target, after which it can then be moved by hand.

In addition to this move to Pepas, two more rigs are currently in the process

of being imported into Colombia to drill at APTA and the northern prospects

of Pepas and Pupino. It is hoped they will be on site in several weeks.

These rigs are man portable as is the current rig, but with more power and a

different configuration that allows them to drill to depths in excess of 1,200

metres. The current and previous rigs used at APTA were constrained to

depths of roughly 800 metres . As announced on March 8 th, 2022, recent

drilling at APTA had demonstrated substantial depth extents to

mineralisation, well beyond what had been previously understood. MMA has

thus decided to bring in new rigs capable of exploring these depth extents

more efficiently.

http://www.rns-pdf.londonstockexchange.com/rns/1270J_1-2022-4-24.pdf

Figure 1. Prospect locations.

Pepas has been selected as the first new target for drilling not only because

of extremely positive geochemical assay results as outlined in the March

8th announcement, but the prospect has also recently seen the completion of

ground Induced Polarisation (IP) geophysical surveys.

IP surveys were trialled effectively at APTA in late 2021 but were halted due

to difficulties in sourcing local labour during the coffee harvest. IP work

recommenced in early 2022, starting in the northern extents and gradually

being extended southward toward Pupino.

Details of this new drill program at Pepas will be released as the work

progresses.

Samples from five holes (MAP -101 to MAP -105) are in the laboratory for

assay. Results from these holes will be communicated to the market when

they are available.

Exercise of Options

Two of the Company's employees have exercised a total of 100,000 options

over the Company's common shares at an exercise price of 0.05 Cdn$ each.

Application will be made for these 100,000 shares, which will rank pari passu

with the existing common shares, to be admitted to trading ("Admission"). It

is expected that Admission will become effective at 8:00am on or around 28

April 2022.

Following the issue of the 100,000 shares noted above, the total number of

common shares of no par value in the Company will be 188,520,300. There

are currently no shares held in treasury. The total number of voting rights in

the Company is therefore 188,520,300. This figure may be used by

shareholders as the denominator for the calculations by which they will

determine if they are required to notify their interest in, or a change to their

interest in, the Company.

Orosur CEO Brad George commented:

"It is exciting to be finally seeing drill rigs move into the wider region. Almost

all drilling to date has been concentrated at APTA, and while this has at times

returned spectacular results, it only represents about 5% of the strike length

of the Aragon fault."

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

Tel: +44 (0)20 3657 0050

Flagstaff Communications and Investor Communications

Tim Thompson

Mark Edwards

Fergus Mellon

[email protected]

Tel: +44 (0)207 129 1474

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 projects in South America. The Company operates in Colombia, Argentina and Brazil.

About the Anzá Project

Anzá 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 Anzá Project is currently wholly owned by Orosur via its subsidiary, Minera Anzá 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.

The Anzá Project is subject to an Exploration Agreement with Venture Option dated September 7th, 2018, as

announced on September 10th, 2018, (the "Agreement") between Orosur's 100% subsidiary Minera Anzá S.A

("Minera Anzá") and Minera Monte Águila SAS ("Monte Águila"), a 50/50 joint venture between Newmont

Corporation ("Newmont") (NYSE:NEM, TSX:NGT), and Agnico Eagle Mines Limited ("Agnico") (NYSE:AEM,

TSX:AEM).

Qualified Persons Statement

The information in this news release was compiled, reviewed and verified by Mr. Brad George, BSc Hons (Geology

and Geophysics), MBA, Member of the Australian Institute of Geoscientists (MAIG), CEO of Orosur Mining Ltd and

a qualified person as defined by National Instrument 43-101.

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 Stat es 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 fro m

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 a s 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 profitab le 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 dis claims 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.