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Atico Mining Discovers New Massive Sulfide and Provides Exploration Update

Drill Results Exploration Programs

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Atico Mining Discovers New Massive Sulfide and Provides Exploration Update

Vancouver, September 12th, 2017 -- Atico Mining Corporation (TSX.V: ATY | OTC:

ATCMF),(“Atico” or the “Company”) is pleased to announce preliminary results of a 15 holes,

2863 meter drill program (ATDHAR-05 to ATDHAR-19) that tested a 450 meter strike length

between the northern end of the El Roble mine and a historical intersection of massive sulfide

mineralization at Archie target.

Results from holes ATDHAR-05, ATDHAR -08, ATDHAR -09 & ATDHAR -10 have been

received, while results from the remaining holes ATDHAR-06, ATDHAR-07, ATDHAR-11 to

ATDHAR-19 are pending. Data from drill holes ATDHAR -01 to ATDHAR -04, referred to

below have been reported in a previous news release dated June 26, 2013.

Fernando E. Ganoza, CEO, commented: “Intercepting a copper-rich massive sulfide fragment

at the Archie target, just north of El Roble Mine, along with the newly discovered geological

indications has made this site a near term priority. We will continue assessing the Archie

information as it becomes available to delineate the next phase of drilling while also continuing

the preparation of additional targets.”

Regional Exploration Drilling Update

The highlight of the drill prog ram was an intersection of 2.8 meters of copper-rich massive

sulfide from 18 meters in hole ATDHAR-09. The intercept assayed 2.39 % Cu, 1.69 g/t Au and

6.5 g/t Ag. Hole ATDHAR-05 intersected 3.3 meters of 1.00% Cu, 0.88 g/t Au and 3.9 g/t Ag

from 2.2 meters. Hole ATDHAR-08 intersected 3 meters of 1.17% Cu, 2.24 g/t Au, 6.59 g/t Ag

from 157.2 meters. Hole ATDHAR-10 intersected 5.5 meters of 1.27% Cu, 0.17 g/t Au and 6.66

g/t Ag from 2.5 meters. H oles ATDHAR-03, ATDHAR -04 and ATDHAR-09 encountered

“black chert”, the favorable host horizon, strongly anomalous in silver at depth some 280 meters

north of the Zeus mineralization. Likewise silver is strongly anomalous near the top of hole

ATDHAR-02. Geochemically anomalous silver has been shown to form a halo around massive

sulfide mineralization.

The drill program has significantly clarified the geology of the area between the El Roble mine

and the Archie target. A sub -vertical fault filled by andesitic dykes north of the Zeus

mineralization has been verified. North of this boundary there is a change in attitude of the

prospective basalt-“black chert” contact from sub -vertical to east -dipping. Consequently any

future exploration to trace the extent to the massive sulfide intercept in hole ATDHAR -09

should be directed to intersect this east-dipping contact at depth and along strike toward the El

Roble Mine.

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Hole ID From

(m)

To

(m)

Interval

(m)

Cu

(%)

Au

(g/t)

Ag

(g/t)

ATDHAR-02 7.2 56.0 48.8 nsr Anomalous

ATDHAR-03 239.5 242.0 2.5 nsr Anomalous

ATDHAR-04 296.0 303.7 7.7 nsr Anomalous

ATDHAR-05 2.2 5.5 3.3 1.00 0.88 3.9

ATDHAR-08 157.2 160.2 3.0 1.17 2.24 6.59

ATDHAR-09 18.0 20.8 2.8 2.39 1.69 6.5

ATDHAR-10 2.5 8.0 5.5 1.27 0.17 6.66

nsr – No Significant Result

El Roble Mine

The El Roble mine is a high grade, underground copper and gold mine with nominal processing

plant capacity of 800 tonnes per day, located in the Department of Choco in Colombia. Its

commercial product is a copper-gold concentrate.

Since obtaining control o f the mine on November 22, 2013, Atico has upgraded the operation

from a historical nominal capacity of 400 tonnes per day.

El Roble has a measured and indicated resource of 1.87 million tonnes grading 3.46% copper

and 2.27 g/t gold, at a cut-off grade of 0.93% copper equivalent. Mineralization is open at depth

and along strike and the Company plans to further test the limits of the resource.

On the larger land package, the Company has identified a prospective stratigraphic contact

between volcanic rocks and black and grey pelagic sediments and cherts that has been traced by

Atico geologists for ten kilometers. This contact has been determined to be an important control

on VMS mineralization on which Atico has identified numerous target areas prospective f or

VMS type mineralization occurrence, which is the focus of the current surface drill program at

El Roble.

Qualified Control

Dr. Demetrius Pohl, Ph.D., AIPG Certified Geologist, a qualified person under NI 43 -101

standards and independent of the Company, is responsible for ensuring that the information

contained in this news release is an accurate summary of the original reports and data provided

to or developed by Atico Mining Corporation. Dr. Pohl has approved the scientific and technical

content of this news release

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About Atico Mining Corporation

Atico is a growth-oriented Company, focused on exploring, developing and mining copper and

gold projects in Latin America. The Company operates the El Roble mine and is pursuing

additional acquisition opportunities. For more information, please visit www.aticomining.com.

ON BEHALF OF THE BOARD

Fernando E. Ganoza

CEO

Atico Mining Corporation

Trading symbols: TSX.V: ATY | OTC: ATCMF

Investor Relations

Igor Dutina

Tel: +1.604.633.9022

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of

the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

No securities regulatory authority has either approved or disapproved of the contents of this news release. The

securities being offered have not been, and will not be, registered under the United States Securities Act of 1933,

as amended (the ‘‘U.S. Securities Act’’), or any state securities laws, and may not be offered or sold in the United

States, or to, or for the account or benefit of, a "U.S. person" (as defined in Regulation S of the U.S. Securities Act)

unless pursuant to an exemption therefrom. This press releas e is for information purposes only and does not

constitute an offer to sell or a solicitation of an offer to buy any securities of the Company in any jurisdiction.

Cautionary Note Regarding Forward Looking Statements

This announcement includes certain “forward-looking statements” within the meaning of Canadian securities

legislation. All statements, other than statements of historical fact, included herein, without limitation the use of

net proceeds, are forward-looking statements. Forward- looking statements involve various risks and uncertainties

and are based on certain factors and assumptions. There can be no assurance that such statements will prove to

be accurate, and actual results and future events could differ materially from those anticipated in such statements.

Important factors that could cause actual results to differ materially from the Company’s expectations include

uncertainties relating to interpretation of drill results and the geology, continuity and grade of mineral deposits;

uncertainty of estimates of capital and operating costs; the need to obtain additional financing to maintain its

interest in and/or explore and develop the Company’s mineral projects; uncertainty of meeting anticipated

program milestones for the Company’s mineral p rojects; and other risks and uncertainties disclosed under the

heading “Risk Factors” in the prospectus of the Company dated March 2, 2012 filed with the Canadian securities

regulatory authorities on the SEDAR website at www.sedar.com