AbraPlata Announces Diablillos PEA Results with 30.2% IRR Production of 9.8 Million Silver Equivalent Ounces Per Year
AbraPlata Announces Diablillos PEA Results with 30.2% IRR
Production of 9.8 Million Silver Equivalent Ounces Per Year
BUENOS AIRES – March 2, 2018 , - AbraPlata Resource Corp. (TSX.V:ABRA; OTC : ABBRF; Frankfurt: 1AH )
("AbraPlata" or the "Company") is pleased to announce the completion of an independent Preliminary Economic
Assessment ("PEA") on the Company's 100% owned Diablillos silver-gold project, located in Salta Province,
Argentina. The results of the PEA demonstrate the potential technical and economic viability of establishing an
open pit silver -gold mine with mill complex on the Diablillos property. Highlights of the PEA are provided in
Table 1 and the forecast annual silver-equivalent (“AgEq”) production and head grades are shown in Figure 1.
Table 1 - Summary of Diablillos Project PEA (all dollar amounts in US$)
Pre-Tax Net Present Value (“NPV”)7.5% $342 Million
Pre-Tax Internal Rate of Return (“IRR”) and Payback 40.7% and 2.9 years
After-Tax NPV7.5% $197 Million
After-Tax IRR and Payback 30.2% and 3.1 years
Average Head Grade 125.1 g/t Ag and 0.72 g/t Au
Average Annual Production 9.8 Moz AgEq or 136,000 oz AuEq
Mine Life 8 years
Average All-in Sustaining Cost per Ounce Produced $7.52/AgEq oz or $542/AuEq oz
Initial Capital $293 Million
Metal Price Assumptions Ag: $20.00/oz and Au: $1,300/oz
Calculated Metal Net Smelter Return (“NSR”) Values Ag: $15.20/oz and Au: $1,097/oz
The PEA is preliminary in nature and includes inferred mineral resources that are too speculative geologically
to have economic considerations applied to them that would enable them to be categorized as mineral
reserves. There is no certainty that PEA results will be realized. Mineral resources that are not mineral reserves
do not have demonstrated economic viability.
Figure 1 - Diablillos Project Annual Silver Equivalent Production and Grade Profile
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150
200
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Equivalent Silver Grade (g/t)
Equivalent Sliver Production (M oz)
Recovered Silver Equivalent Average Annual Silver Equivalent Grade
Commenting on the results, Hernan Zaballa, Chairman of AbraPlata, stated, “We are very plea sed with the
robust results of the Diablillos PEA. The PEA demonstrates that Diablillos has the potential to produce almost
10 million AgEq ounces per year at a low all -in sustaining cost per ounce . While the main Oculto deposit does
require pre-stripping, the average grades are relatively high for an open pit mine. On the basis of historical drill
results, our geological team believe that there is strong potential to expand the high grade gold zones in the
eastern portion of the Oculto deposit, which are not included in the PEA pit shell. The gold-rich mineralization
at Oculto and additional near-surface mineralization at satellite deposits sets up the potential to extend the
mine life and potentially strengthen the economics even more in future economic studies.”
The PEA was prepared under the guidance of lead consultant RPA Inc. of Toronto ("RPA") with input from GR
Engineering Services Ltd of Perth, Western Australia (“GRES”), and Saxum Engineered Solutions of Argentina
(“Saxum”).
A cash flow valuation model for the Diablillos project was developed as part of the PEA. From metal prices of
US$20.00 per ounce silver and US$1,300 per ounce gold, Table 2 shows the sensitivity of estimated NPV of the
project's cash flows at various silver prices. Figure 2 shows the undiscounted annual and cumulative after -tax
cash flows.
Table 2 - PEA Sensitivity to Silver Price
Silver Price (US$/oz Ag) After-Tax NPV7.5% (US$) After-Tax IRR After-Tax Pay Back
$16/oz Ag $108 Million 20.3% 3.7 Years
$18/oz Ag $153 Million 25.3% 3.4 Years
$20/oz Ag $197 Million 30.2% 3.1 Years
$22/oz Ag $241 Million 34.9% 3.0 Years
$24/oz Ag $285 Million 39.5% 2.8 Years
Figure 2 - Diablillos Project Undiscounted After-Tax Cash Flow
Project Description and Mineral Resource Estimate
The Diablillos property is located in the Puna of Argentina, in the Province of Salta, approximately 1 50 km
southwest of the city of Salta. The property comprises nine mineral leases acquired by AbraPlata in 2016 from
SSR Mining Inc. (formerly Silver Standard Resources Inc.), with several known occurrences of epithermal gold -
silver mineralization. Exploration work, conducted by a number of operators over the history of the project,
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includes 87,711 m of diamond and reverse circulation drilling in 476 holes. This drilling has delineated the Oculto
and Fantasma deposits, which are weathered high-sulphidation epithermal gold-silver deposits hosted primarily
in Tertiary volcanic and sedimentary rocks. The current Mineral Resource estimate s for the Oculto and
Fantasma deposits are shown in Table 3.
Table 3 - Diablillos Mineral Resource Estimates – Effective August 31, 2017
Deposit Category Tonnage Ag Au Contained Ag Contained Au
(000 t) (g/t) (g/t) (000 oz Ag) (000 oz Au)
Oculto Indicated 26,850 93.0 0.85 80,300 732
Fantasma Indicated 200 98.3 - 650 -
Total Indicated 27,100 93.1 0.84 80,940 732
Oculto Inferred 1,000 46.8 0.89 1,510 29
Fantasma Inferred 80 75.3 - 190 -
Total Inferred 1,100 48.8 0.83 1,690 29
Notes:
1. CIM definitions were followed for Mineral Resources.
2. Mineral Resources are estimated at a cut off grade of 40 g/t AgEq for Oculto and 40 g/t Ag for Fantasma.
3. Mineral Resources are estimated using long-term metal prices of US$1,500/oz Au and US$23/oz Ag.
4. Average bulk density is 2.22 t/m3 for the Indicated category and 2.29 t/m3 for Inferred for Oculto and 2.00 t/m3 for both
Indicated and Inferred categories for Fantasma.
5. The estimate is constrained by pit shells for both Oculto and Fantasma.
6. Numbers may not add due to rounding.
Production Summary
The PEA envisions conventional open pit mining methods utilizing contractor-operated truck and shovel
operations. Oculto will require approximately 18 months of pre -stripping of unmineralized overburden. The
Oculto pit will have a mine life of eight years (excluding pre-stripping) and be supplemented by a small amount
of material from the nearby Fantasma deposit. The life of mine (“ LOM”) strip ratio will be 3.2:1, or 4.6:1
including pre-stripping. The final pit shells and waste dump are shown in Figure 3.
Figure 3 – Site Layout - Plan View
Process
Plant
Fantasma
Pit
Oculto
Pit
Waste
Dump
Process Plant
The processing facility has been selected as a conventional silver processing plant that incorporates crushing,
grinding, agitated leaching, counter current decantation ( “CCD”), cyanide recovery, Merrill -Crowe zinc
precipitation, refining and tailings disposal. The design basis for the process plant is 6,000 tonnes of mineralized
material per calendar day ( “tpd”), or 2.19 million tonnes of mineralized material per annum. The equipment
has been sized to achieve this throughput with an operating availability of 70% in the crushing circuit and 91.3%
in the grinding and cyanidation sections.
The three-stage crushing circuit delivers crushed material to a fine ore storage bin. The crushed material is
withdrawn from the bin to feed a 6.0 MW ball mill that has a centrifugal gravity recovery circuit included in the
design. Ground material is fed into six leach tanks where the silver and gold will be dissolved. The leached
slurry is then sent to the CCD circuit where the silver and gold solution is washed away from the solids before
being sent to the Merrill-Crowe zinc precipitation circuit to recover the silver and gold. The precious metals are
then refined and poured into Dore bars in the refinery. The washed solids from the CCD circuit are sent to the
cyanide recovery circuit to maximize the amount of cyanide that can be recirculated and the resulting slurry is
sent to cyanide detoxification before being pumped to the final tailings storage facility (“TSF”).
A number of trade-off studies looked at the treatment options for the project’s high and low grade mineralized
material. A range of throughput options were investigated for high grade milling at 4,000 tpd, 6,000 tpd and
8,000 tpd. The optimum throughput for high grade mineralized material was determined to be 6,000 tpd.
For the lower grade mineralized material, two different treatment options were considered, being either heap
leaching (“HL”) or operating t he process plant at a higher throughput (“HTP”) than the nominated 6,000 tpd.
This was achieved by allowing the grind size of the material exiting the grinding section to increase from a P80 of
75 micron to a P80 of 100 micron, increasing the nominal throughput rate to 7,500 tpd.
Recoveries
The recovery of silver and gold was calculated as a function of the head grade of the mineralized material
treated. For both the standard milling circuit and the HTP option, the same regression equ ations were used,
with an additional lowering of the recovery with the coarser particle size in the HTP option. The gold recovery
for HTP was lowered by an additional 4% from the regression calculation, whilst the silver recovery was lowered
by 8%. Life of mine average silver and gold recovery for the standard milling option are 82% and 86% ,
respectively, and the HTP milling option achieves 55% and 81%, respectively.
Project Capital Costs
The capital costs ("CAPEX") for the contemplated open pit mine, process plant and supporting infrastructure for
the Diablillos project are estimated at US$ 311 million. Initial capital costs are estimated at US$ 293 million,
including US$91 million in pre-stripping costs at the Fantasma and Oculto deposits and contingencies of US$32
million. The capital costs for the process plant were based on input from GRES, which specializes in fixed price
engineering design and construction services to the resources an d mineral processing industry. Other capital
costs were estimated from a variety of sources including comparative analysis of other operations, derivation
from first principles, equipment quotes and factoring from other costs contained within the PEA. The project
CAPEX is summarized in Table 4.
Table 4 - Summary of Capital Cost Estimates
Description Cost US$000s
Surface Mining 93,308
Processing 69,192
Site Infrastructure 35,195
Owner Costs 17,336
Indirect Costs 45,645
Contingency & Other Provisions 32,282
Initial Capital Cost 292,959
Sustaining Capital 4,998
Closure 13,000
Total Capital Costs 310,957
Operating Costs
The operating cost estimate ("OPEX") is based on a contractor -operated truck and shovel mining operation,
conventional processing facility, and TSF. Mine operating cost estimates are provided in Table 5 and unit OPEX
per ounce produced is shown in Table 6. The PEA estimates that the OPEX will average US$6.52 per ounce of
AgEq (or US$470 per ounce of AuEq).
Table 5 – Mine Operating Cost Estimates
Operating Costs US$ per tonne mined US$ per tonne milled
Mining – waste 3.00 8.75*
Mining - mineralized material 3.60 3.23
Standard Milling 14.63
Standard Milling G&A 2.92
HTP Milling 12.68
HTP Milling G&A 2.33
* Note: excludes capitalized stripping costs.
Table 6 - Operating Costs per Ounce Produced
Operating Costs US$ per AgEq oz Produced US$ per AuEq oz Produced
Surface Mining 2.57 186
Salta Province Royalty 0.34 24
Processing 3.02 218
G & A 0.59 43
Total Operating Cost 6.52 470
Opportunities to Enhance Value
The PEA pit shell focuses on the most profitable portion of the Mineral Resources, accounting for approximately
60% of the tonnage contained within the Mineral Resource pit shell. The PEA does not contemplate mining the
eastern portion of the Oculto deposit due to t he depth of mineralization , which would result in an increased
stripping ratio. Historical drilling in the eastern portion of the Oculto deposit has encountered high grade gold
mineralization in metamorphic basement rocks (e.g. DDH-87-007A intersected 16.7 g/t Au and 39.2 g/t Ag over
10.6 metres starting at 210 metres down hole). A recent comprehensive review of drilling results by the
Company and its consulting geologist suggests the existence of a high grade gold zone that coincides with the
recently identified structure that controls both geometry and the overall NE -SW trend of the Oculto deposit.
Additional drilling is recommended to test the extent of the high grade gold zone as additional high grade gold
in the eastern portion of the Oculto deposit could result in an increased mine life.
Satellite deposits to Oculto - namely Fantasma, Laderas, and Cerro Viejo - are known to co ntain silver and/or
gold mineralization near surface. Additional drilling of these deposits may provide additional mill feed to
increase the mine life envisioned in the PEA.
Technical Disclosure
The scientific and technical information in this news release with respect to the PEA has been reviewed and
approved by Scott Ladd, P.Eng. and David Rennie, P.Eng. of RPA, and Gerry Neeling, FAusIMM of GRES, each of
whom is an independent "qualified person" under National Instrument 43 -101 – Standards of Disclosure for
Mineral Projects ("NI -43-101"). All other scientific and technical information in this news release has been
approved by Willem Fuchter, PhD P.Geo., President & CEO of AbraPlata Resource Corp and a qualified person
as defined by National Instrument 43-101.
A new technical report summarizing the PEA will be filed on SEDAR (www.sedar.com) within 45 days of this
news release.
About AbraPlata
AbraPlata is a junior mining exploration company focused on delivering shareholder returns by unlocki ng
mineral value in Argentina. The Company's experienced management team has assembl ed an outstanding
portfolio of gold, silver and copper exploration assets, and is focused on advancing its flagship Diablillos silver-
gold property, with an Indicated Mineral Resource containing 80.9M oz Ag and 732k oz Au, through the various
stages of feasibility. In addition, AbraPlata owns the highly prospective Cerro Amarillo property with its cluster
of five mineralized Cu-(Mo-Au) porphyry intrusions located in a mining camp hosting the behemoth El Teniente,
Los Bronces, and Los Pelambres porphyry Cu-Mo deposits. Further exploration work is also planned for the
Company’s Samenta porphyry Cu-Mo property south of First Quantum’s TacaTaca project as well as its Aguas
Perdidas Au-Ag epithermal property.
About RPA
RPA is a global mining consultant with offices in Canada, the United States, and the United Kingdom. T he
company provides services to the mining industry at all stages of project development from exploration and
resource evaluation through scoping, prefeasibility and feasibility studies, financing, permitting, construction,
operation, closure and rehabilitation. RPA advises major mining companies, mid -cap producers, junior mining
and exploration companies, financial institutions, governments, law firms, and individual investors on the
technical and commercial aspects of mineral property development.
About GRES
GR Engineering Services Limited is a medium -sized, ASX -listed (ASX: GNG) process design and engineering
contractor specializing in providing engineering design and construction services to the mineral processing
industry. Headquartered in Perth, Weste rn Australia, GRES has successfully delivered EPC fixed price projects
and EPCM services into a large number of projects which have been located in many different countries and
regions. GRES has teams of highly experienced technical and engineering professionals and broad experience in
the compilation of feasibility studies.
ON BEHALF OF THE BOARD
ABRAPLATA RESOURCE CORP.
"Willem Fuchter"
Willem Fuchter
President & Chief Executive Officer
For further information concerning this news release, please contact:
Willem Fuchter - President & CEO Rob Bruggeman - Investor Relations
Tel: +54.11.5258.0920 Tel: +1.416.884.3556
E-mail: [email protected] Email: [email protected]
This news release includes certain "forward -looking statements" under applicable Canadian securities
legislation. Forward-looking statements are necessarily based upon a number of estimates and assumptions
that, while considered reasona ble, are subject to known and unknown risks, uncertainties, and other factors
which may cause the actual results and future events to differ materially from those expressed or implied by such
forward-looking statements. All statements that address future p lans, activities, events or developments that
the Company believes, expects or anticipates will or may occur are forward -looking information. There can be
no assurance that such statements will prove to be accurate, as actual results and future events coul d differ
materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on
forward-looking statements. The Company disclaims any intention or obligation to update or revise any forward-
looking statements, whether as a result of new information, future events or otherwise, except as required by
law.
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.
For further information about AbraPlata and its projects, please visit the Company’s website at
www.abraplata.com.