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ATY.V ·

Atico Reports Consolidated Financial Results for 2017

Financials

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 1 of 6

Atico Reports Consolidated Financial Results for 2017

(All amounts expressed in US dollars, unless otherwise stated)

Vancouver, April 23, 2018 -- Atico Mining Corporation (the “Company” or “Atico”) (TSX.V:

ATY | OTC: ATCMF) today announced its financial results for the year ended December 31, 2017,

posting income from mining operations of $ 15.32 million and a net income of $ 4.04 million.

Production for the year at Atico's El Roble mine totaled 20.6 million pounds (“lbs”) of copper and

10,923 ounces (“oz”) of gold in concentrates at a cash cost(1) of $1.45 per payable pound of copper

produced(2).

Fernando E. Ganoza, CEO and Director, commented, "We are pleased to report our strongest year

to date both operationally and financially, as the Company concluded 2017 exceeding nearly all

set objectives for the year. Operationally, we delivered above our higher end guidance while

further increasing operational standards at El Roble. Financially, we have delivered a record year

in most metrics while significantly strengthening our balance sheet. These accomplishments

allowed us to allocate additional funds to drill test three of the fifteen targets on the 6,600-hectare

prospective land package the Company controls. Mr. Ganoza continued, "In 2018, we will focus

on organic growth at El Roble property by following up on positive exploration results from the

previous year while also testing at least two new regional drill targets. In parallel, the search for a

second asset remains to be a high priority as we continue to strive towards our goal of becoming a

leading mid-tear producer."

2017 Consolidated Financial Highlights

• Net income for the year amounted to $ 4.04 million, compared with $ 0.32 million fo r the

previous year. Net income for the year was positively affected by an increase in revenue

(increase in realized copper price of 26.2%), partially offset by increases in direct mining and

processing costs, and selling, general and administrative expenses.

• Sales for the year increased 49% to $57.00 million when compared with 2016. The increase

was due to additional concentrate shipped and provisionally invoiced with a higher realized

copper price when compared to 2016. Copper (“Cu”) accounted for 9 7.6% and gold (“Au”)

2.4% of total amount provisionally invoiced during the year. The average realized price per

metal on provisional invoicing was $2. 79 (2016 - $2.21) per pound of copper and $1, 265.21

(2016 - $1,256.11) per ounce of gold.

• Working capital was $4.6 million (2016 - $1.7 million), while the Company repaid principal

of $3.1 million (2016 - $2.0 million) on its long-term loans payable with $2.7 million (2016 -

$5.6 million) outstanding at the reporting date.

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 2 of 6

• Cash costs(1) were $118.94 per tonne of processed ore and $1.44 per pound of payable copper

produced(2), increases of 20% and 32% over last year, respectively.

• Income from operations was $ 7.58 million (2016 - $1.56 million) while cash flow from

operations, before changes in working capital was $ 18.18 million (2016 - $11.44 million) .

Cash used for capital expenditures amounted to $10.18 million (2016 - $8.50 million).

• At the year-end, 3,797 (2016 - 7,366) wet metric tonnes of non-invoiced concentrate remained

at the Company’s warehouses.

• All-in sustaining cash cost per payable pound of copper produced (1)(2) for the year was $2.05

(2016 - $1.63).

2017 Consolidated Operating Highlights

• Ore processed increased 6% year-on-year;

• Copper head grade increased 4% year-on-year;

• Gold head grade decreased 3% year-on-year;

• Concentrate production increased 3% year-on-year;

• Copper metal production increased 10% year-on-year; and

• Gold metal production decreased 2% year-on-year.

Fourth Quarter Operating and Financial Highlights

• The Company produced 11,224 dry metric tonnes of concentrate during the quarter with a

metal content of 5.3 million pounds of copper, 2,972 ounces of gold and 9,586 oz of silver.

• Sales of $13.75 million were generated during the quarter, where copper accounted for 98.9%

and gold for 1.1% of the total. The average realized price per metal on provisional invoicing

was $3.04 per pound of copper and $1,289.88 per ounce of gold.

• Cash costs(1) for the quarter were $133.24 per tonne of processed ore and $1. 67 per pound of

payable copper produced(2).

• Cash flow from operations, before changes in working capital, for the quarter was $ 3.44

million.

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 3 of 6

2017 Consolidated Operations Review

In 2017, the Company produced 20.6 million lbs of copper, 10,923 oz of gold, and 40,283 oz of

silver. When compared to 2016, production increased by 10% for copper and decreased by 2% for

gold. The increase in copper produced is mainly explained by 6% more processed material and a

4% increase in the copper head grade. In the case of gold, the increase in processed material was

partially offset by a 3% decrease in the gold head grade and a 4% decrease in the metal recovery.

Cash costs(1)(2) were $118.94 per tonne of processed ore and $1. 44 per pound of payable copper

produced, which was an increase of 20% and 32% over 201 6, respectively (refer to non -GAAP

Financial Measures). All-in sustaining cash cost per payable pound of copper produced (1)(2) was

$2.05.

For fiscal 2017, treatment charges had a variable surcharge component dependent on the copper

price. The higher average copper price during fiscal 2017 alone had a negative effect of 12.1% on

the cash cost per payable pound of copper produced over 2016. The Company does not anticipate

a similar treatment surcharge for fiscal 2018.

Fourth Quarter Operations Review

During the quarter, the Company produced 5.3 million lbs of copper, 2,972 oz of gold, and 9,586

oz of silver. When compared to Q 4-2016, production increased 4% for copper and 5% for gold .

The increases in copper and gold produced are mainly explained by a 2% increase in processed

material and 2% and 3% increases in the copper and gold head grades, respectively.

Cash costs (1) for the period were $1 33.24 per tonne of processed ore, and $ 1.67 per pound of

payable copper produced(2), increases of 40% and 27% over the same period last year, respectively.

The increase in the cash cost per pound of payable copper net of by products is mainly explained

by the increase in the cost per processed tonne and treatment surcharge, partially offset by a higher

gold credit. All-in sustaining cash cost per payable pound of copper produced(1)(2) was $2.28. The

treatment surcharge during the quarter had a negative effect of 21.6% on the cash cost per payable

pound of copper produced over Q4-2016.

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 4 of 6

Consolidated Operational Details

Q1 Total Q2 Total Q3 Total Q4 Total 2017 Total

Production (Contained in Concentrates)*

Copper (000s pounds) 5,046 5,154 5,099 5,326 20,625

Gold (ounces) 2,550 2,570 2,831 2,972 10,923

Silver (ounces) 9,852 10,005 10,840 9,586 40,283

Mine

Tonnes of ore mined 63,468 65,942 74,919 64,705 269,034

Mill

Tonnes processed 62,885 62,802 66,443 63,948 256,078

Tonnes processed per day 810 794 794 763 790

Copper grade (%) 3.89 3.94 3.68 3.98 3.87

Gold grade (g/t) 19.2 2.07 2.16 2.25 2.10

Silver grade (g/t) 9.12 9.96 10.31 8.24 9.42

Recoveries

Copper (%) 93.5 94.4 94.3 95.0 94.3

Gold (%) 65.8 61.8 61.1 64.2 63.2

Silver (%) 53.9 49.9 49.5 56.7 52.5

Concentrates

Copper Concentrates (dmt) 10,566 10,460 10,551 11,224 42,801

Copper (%) 21.7 22.3 21.9 21.5 21.8

Gold (g/t) 7.5 7.6 8.4 8.2 7.9

Silver (g/t) 29.0 29.7 32.0 26.5 29.3

Payable copper produced (000s lbs) 4,790 4,897 4,844 5,060 19,591

Cash cost per pound of payable copper(1)(2) ($/lbs) 1.41 1.30 1.37 1.67 1.44

* Subject to adjustments due to final settlement

The financial statements and MD&A are available on SEDAR and have also been posted on the

company's website at http://aticomining.com/investors/financial-reports.

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 5 of 6

Annual General Meeting

Atico Mining cordially invites all shareholders to its Annual General and Special Meeting of

Shareholders, at 10:00 am, Wednesday, May 30, 2018, at Suite 501 - 543 Granville Street

Vancouver, British Columbia.

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 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 for VMS

type mineralization occurrence, which is the focus of the current 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.

(1) Alternative performance measures; please refer to “Non-GAAP Financial Measures” at the end of this release.

(2) Net of by-product credits

(3) Subject to adjustments on final settlement

Page 6 of 6

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 i nformation 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 involv e 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 statem ents.

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 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 reserve 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 year ended December 31, 2017 as filed

on SEDAR and as available on the Company's website for further details.