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ATY.V ·

Atico Produces 5.05 Million Pounds of Cu and 2,550 Ounces of Au in First Quarter 2017

Production Results

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Atico Produces 5.05 Million Pounds of Cu and 2,550 Ounces of Au in First

Quarter 2017

Vancouver, April 11, 2017 -- Atico Mining Corporation (the “Company” or “Atico”) (TSX.V:

ATY | OTC: ATCMF) announces its operating results for the three months ended March 31,

2017 from its El Roble mine. Production for the quarter totaled 5.05 million pounds of copper

and 2,550 ounces of gold in concentrates, an increase of 18% for copper and a decrease of 2%

for gold over the same period in 2016.

“We are very please d to report the Company has had another strong operating quarter

maintaining its previously reached historic high for processed ore and produced copper , while

getting us to a strong start of the year well in line with the operational objectives for 2017 .”

said Fernando E. Ganoza, CEO. “Along with robust operating results the Company has made

three concentrate shipment s during the quarter that will be reflected in th e first quarter

financial results. We will continue to look for opportunities to further optimize the mine in the

subsequent quarters and focus on delivering on our 2017 guidance.”

First Quarter Operational Highlights

 Production of 5.05 million pounds of copper contained in concentrates ; an increase of

18% over Q1 2016.

 Production of 2,550 ounces of gold contained in concentrates ; a very slight decrease

over Q1 2016.

 Average processed tonnes per day of 810, an increase of 4% over Q1 2016.

 Copper head grade of 3.89%, an increase of 2% over Q1 2016.

 Gold head grade of 1.92 grams per tonne; a decrease of 13% over Q1 2016.

 Copper and gold recover y of 93.5% and 65.8%; a decrease of 1% for copper 2% for

gold over Q1 2016.

First Quarter Operational Review

Optimization of the operation continued throughout the first quarter with positive results in

maintaining the recently reached steady state daily throughput and mill capacity above 800

tonnes per day.

Processed ore increased 17% over Q1 -2016 driven by an increase of 12% in the number of

days worked and to a lesser extent an increase in the daily throughput rate of 4%. The increase

in processed ore explains a lmost entirely the higher copper production during the quarter

relative to Q1-2016. In the case of gold production the increase in processed ore was offset by

a lower head grade and a decrease in the gold recovery.

Copper and gold recovery during the qua rter were in line with Company projection s. Gold

recovery decreased slightly as expected driven by an 8% increase in the copper content in the

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concentrate to 21.66% (20.08% in Q1 -2016). This increase in the copper content in the

concentrate provides a net economic benefit offsetting the resulting decrease in gold recovery .

The Company will continue to explore increasing the copper content in the concentrate in the

following quarters.

The operation remains on track to deliver on set guidance throughout the remainder of the

year.

First Quarter Operational Details

Q1 2017

Total

Q1 2016

Total

% Change

Production (Contained in Concentrates)

Copper (000s pounds) 5,046 4,277 18%

Gold (ounces) 2,550 2,566 nil

Mine

Tonnes of ore mined 63,468 53,752 18%

Mill

Tonnes processed 62,885 53,715 17%

Tonnes processed per day 810 778 4%

Copper grade (%) 3.89 3.82 2%

Gold grade (g/t) 1.92 2.21 -13%

Recoveries

Copper (%) 93.5 94.4 -1%

Gold (%) 65.8 67.2 -2%

Concentrates

Copper and Gold Concentrates (dmt) 10,566 9,674 9%

Payable copper produced (000s lbs) 4,790 4,048 18%

Note: Metal production figures are subject to adjustments based on final settlement.

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2017 Operational Guidance

The Company is basing 2017 guidance on year ended December 31, 2016 financial and

production results. Please refer to Cautionary Note on Forward Looking Statements at the end

of this document.

The Company set the following objectives for 2017 at the El Roble mine:

Process between 260,000 and 265,000 tonnes.

Maintain copper recovery above 93% and 65% for gold.

Maintain an average copper head grade between 3.3% and 3.5%

Maintain an average gold head grade between 2.0 g/t and 2.2 g/t

Maintain production between 37,000 and 39,000 dry tonnes of concentrate.

Maintain production between 8,300 and 8,500 tonnes of copper.

Maintain production between 9,700 and 10,000 ounces of gold.

Increase the mill mechanical availability to 90% and reach 320 days worked.

Continue increasing the safety and environmental standards.

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 of the mine on November 22, 2013, Atico has upgraded the operation

from a nominal capacity of 400 tonnes per day. The mine has a continuous operating history

of twenty-two years, with recorded production of 1.5 million tonnes of ore at an average head

grade of 2.6% copper and an estimated gold grade of 2.5 g/t. Copper and gold mineralization

at the El Roble property occurs in volcanogenic massive sulfide (“VMS”) lenses.

Since entering into the option agreement in January 2011 to acquire 90% of El Roble, Atico

has aggressively explored the mine and surrounding claims. The Company has completed

31,377 meters of diamond drilling and identified numerous prospective targets for VMS

deposits on the 6,679 -hectare property. This exploration led to the discovery of high -grade

copper and gold minera lization below the 2000 level, the lowest production level of the El

Roble mine. Atico has developed a new adit access from the 1880 elevation to develop these

new resources.

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.

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

between volcanic rocks and black and grey 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 15 p rospective target areas for VMS type

mineralization occurrence, which is the focus of the surface drill program at El Roble.

Qualified Person

Mr. Thomas Kelly (SME Registered Member 1696580), advisor to the Company and a

qualified person under National Instrument 43-101 standards, is responsible for ensuring that

the technical information contained in this news release is an accurate summary of the original

reports and data provided to or developed by Atico.

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 release 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.

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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 n o 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 interes t in and/or explore and develop the Company’s mineral projects; uncertainty of

meeting anticipated program milestones for the Company’s mineral projects; 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

The Company has not based its production decisions and ongoing mine production on mineral rese rve estimates,

preliminary economic assessments or feasibility studies, and historically such projects have increased

uncertainty and risk of failure. Mineral resources that are not mineral reserves do not have demonstrated

economic viability.

Non-GAAP Financial Measures

The items marked with a "(1)" are alternative performance measures and readers should refer to Non -GAAP

Financial Measures in the Company's Management's Discussion and Analysis for the nine months ended

September 30, 2016 as filed on SEDAR and as available on the Company's website for further details.