Atico reports Reserves of 119 Million Pounds of Copper at the El Roble Mine
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Atico reports Reserves of 119 Million Pounds of Copper at the El Roble Mine
Vancouver, November 13, 2018 -- Atico Mining Corporation (the “Company” or “Atico”)
(TSX.V: ATY | OTC: ATCMF) is pleased to announce the release of an updated NI 43 -101
mineral resource and reserve estimate for the El Roble Mine located in Colombia. El Roble is
currently in production at a rate of 850tpd and production guidance for the year is 20 million
pounds of copper along with 9,850 ounces of gold in 2018. For the first three quarters of 2018,
El Roble has produced 16 million pounds of copper and 8,400 ounces of gold or over 80% and
85% of annual forecast production for copper and gold respectively.
“Our infill and mine vicinity exploration drilling at El Roble mine has been successful in
replenishing mined resources since 2013. The maiden resource study at El Roble mine of 1.5
million tonnes of inferred resource has grown to 1.8 million tonnes of measured and indicated
resources, while also having mined over 1 million tonnes of high -grade ore during the same
period,” said Fernando E. Ganoza, CEO. “We will continue looking for opportunities to further
extend the life of mine at El Roble while also drilling for additional massive sulphide deposits
on the contiguous 6,600 hectare land package we control.”
Resource and Reserve Estimate Highlights
• Measured and Indicated Mineral Resources are estimated at 1.80 mill ion tonnes averaging
3.63% Cu, and 2.25 g/t Au.
• Proven and Probable Mineral Reserves are estimated at 1.38 million tonnes averaging 3.62 %
Cu, and 2.01 g/t Au.
• A conversion rate of 76.7% of Measured a nd Indicated resources to Proven and Probable
reserve categories over the current resource estimate.
• Inferred Mineral Resources are estimated at 0.24 million tonnes averaging 0.62 % Cu, and
4.06 g/t Au.
El Roble Resource and Reserve Estimate
The updated mineral resource and reserve estimate for El Roble was prepared by staff and
consultants of Miner SA, an Atico Mining operating subsidiary . Mr. Thomas Kelly (SME
Registered Member 1696580) has reviewed the resource and reserve estimate and acted as the
independent qualified person as defined by Canadian National Instrument 43-101. The Mineral
Resources and Reserves reported herein were estimated using the Canadian Institute of Mining,
Metallurgy and Petroleum (CIM) Standards on Mineral Resources and Reserves, Definitions
and Guidelines prepared by the CIM Standing Committee on Reserve Definitions and adopted
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by CIM Council. This resource and reserve estimate is based on all data available through June
30, 2018.
Category
Tonnes
(000)
Cu
(%)
Au
(g/t)
Proven 1,079 3.76 2.03
Probable 305 3.12 1.92
Proven + Probable Reserves 1,383 3.62 2.01
Category
Tonnes
(000)
Cu
(%)
Au
(g/t)
Measured Resources 1,357.1 3.76 2.24
Indicated Resources 446.2 3.24 2.27
Measured + Indicated Resources 1,803.3 3.63 2.25
Category
Tonnes
(000)
Cu
(%)
Au
(g/t)
Inferred Resources 23.9 0.62 4.06
1. Mineral Resources and Mineral Reserves are as defined by CIM Definition Standards on Mineral Resources and Mineral Reserves
2014.
2. Mineral Resources and Mineral Reserves are estimated as of June 30, 2018
3. Mineral Reserves are reported above a NSR breakeven cut-off value of US$121.97/t cost basis (January 2017 to June 2018)
4. Mineral Resources are reported based on an NSR cut-off grade of US$59.55/t (January to December 2017)
5. Metal prices considered were US$ 1,278.56/oz Au and US$ 3.26/lb Cu.
6. Metallurgical recoveries are based in the historical recovery (January 2017 to June 2018): Au is 61.82% and Cu is 94.15%.
7. Metal payable recovery used 89.74% for gold and 94.78% for copper (January 2017 to June 2018).
8. Operating costs were estimated based on actual operating costs (January 2017 to June 2018)
9. Density was calculated on each ore-body (Goliat = 3.34t/m3, Maximus = 3.50t/m3, Maximus Sur = 3.26t/m3, Zeus = 3.53t/m3).
10. Mineral Resources, as reported, are undiluted. Mineral reserves are diluted based upon historic dilution rates for first pass, second
pass and pillar recovery stoping at El Roble.
11. Mineral Resources are reported to 0.88% Cu Eq cut-off grade
12. CuEq for each block was calculated by multiplying one tonne of mass of each by block grade by its average recov ery, metal payable
recovery and metal price. If the block is higher that CuEq cut-off, the block is included in the resource estimate
13. Reported mineral resources are inclusive of reported mineral reserves. Mineral resources, which are not mineral reserves, have not
demonstrated economic viability. Environmental, permitting, legal, title, taxation, socio -political, marketing, or other relevant issues
may materially affect the estimate of mineral resources. The quantity and grade of the Inferred resources reported in this estimation are
conceptual in nature and it is uncertain if further exploration will result in upgrading of the Inferred resources to Indicated or Measured
resources.
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Resource and Reserve Estimation Methodology
The Mineral Resource estimation considers channel and core samples, in addition to the
underground mine mapping for the construction of three -dimensional wireframes of the
lithology and mineralized bodies. Estimation of grades in the block models only cons iders
samples located inside the mineralized bodies solid, which are applied to anomalous grade or
top cut treatment and a further compositing process. The model was constructed using 2m x 2m
x 2m blocks, which represents the selective mining unit (SMU). T he orebodies estimation is
conducted separately body by body and element by element (Cu and Au). The methods used
for grade estimation are cubic inverse distance (Goliat, Maximus and Maximus Sur Orebodies)
and Ordinary Kriging (Zeus Orebody).
A density fa ctor specific for each ore -body was assumed for conversion of block volumes to
tonnes (Goliat = 3.34t/m3, Maximus = 3.50t/m3, Maximus Sur = 3.26t/m3, Zeus = 3.53t/m3).
Mineral Resources are reported to 0.88% CuEq cut -off. For each block, the CuEq value was
calculated by multiplying one tonne of mass of each by block grade by its average recovery,
metal payable recovery and metal price. Blocks with CuEq grade higher than the CuEq cut-off
were included in the resource estimate.
Proven and Probable Mineral Res erves were derived from the Measured and Indicated
Resources by applying modifying factors related to mining methods, mining dilution and
historical operating costs detailed as follows: mining (US $59.16/t), processing (US $19.07/t),
general services (US $ 20.95/t), on-site administration and indirect (US $ 9.73/t), selling and
concentrate shipping (US $13.05/t). Operating costs total US $121.97/t and comprise the lower
NSR value for reserve reporting purposes. Mining dilution was estimated at variable percentages
depending on the mining activity and labour, and ranges from 2.99% for breasting within the
ore-body to 7.36% for crown pillar recovery.
The resource and reserve models have been validated by reconciliation against actual mined
production continuously for several years with reconciliation results being acceptable for all ore
bodies that have experienced a significant amount of production.
A full NI43 -101 report authored by Mr. Thomas Kelly will be available on www.sedar.com
within 45 days of this news release.
El Roble Mine
The El Roble mine is a high grade, underground copper and gold mine with nominal processing
plant capacity of 8 50 tonnes per day, located in the Department of Choco in Colombia. Its
commercial product is a copper-gold concentrate.
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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 1.8 million tonnes grading 3.63% copper and
2.25 g/t gold, at a cut -off grade of 0. 88 % 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.
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.
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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.
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 a ssumptions. 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 materi ally 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 financi ng 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