Nov 30, 2021 miningnewsdaily

Discovery Silver Reports Preliminary Economic Assessment on Cordero with After-Tax NPV of US$1.2 B, IRR of 38% and Payback of 2.0 Years

TORONTO, Nov. 30, 2021 (GLOBE NEWSWIRE) —

Discovery Silver Corp.

(TSX-V: DSV, OTCQX: DSVSF) (“Discovery” or the “Company”) is pleased to announce results from its Preliminary Economic Assessment (“PEA” or “the Study”) on its 100%-owned Cordero silver project (“Cordero” or “the Project”) located in Chihuahua State, Mexico.


Study highlights include (all figures are in USD unless otherwise noted):


  • Excellent project economics:

    Base Case after-tax NPV5% of $1.2 B (C$1.5 B) and IRR of 38% (Ag – $22.00/oz, Au – $1,600/oz, Pb – $1.00/lb and Zn – $1.20/lb).

  • Exceptional silver price leverage:

    Upside Case after-tax NPV5% of $1.9 B (C$2.4 B) and IRR of 55% (Ag – $27.50/oz, Au – $1,880/oz, Pb – $1.10/lb and Zn – $1.45/lb based on one-year trailing 90

    th

    percentile prices).

  • Large-scale, high-margin, long mine life asset:

    16-year mine life with average annual production of 26 Moz AgEq at an AISC of $12.35/oz AgEq.

  • Low capital intensity:

    initial development capex of $368 M; attractive NPV-to-capex ratio of 3.2x.

  • Rapid payback:

    post-tax payback of 2.0 years for Base Case and 1.4 years for Upside Case.

  • Technically robust study:

    99% of tonnes processed in the PEA mine plan are in the Measured & Indicated category; process design and metallurgical recovery estimates are based on the Company’s comprehensive 2021 metallurgical testwork program.

  • Silver-dominant revenues:

    silver represents +60% of the net smelter return in the first five years of the mine life and +50% of the net smelter return over the life of mine, in-line with the senior/mid-tier silver producer group.

Taj Singh, President and CEO, states:

“With annual AgEq production averaging more than 26 Moz over a +15-year mine life we believe this PEA clearly positions Cordero as a Tier 1 silver asset. This impressive scale of production is achieved through modest development capex of $368 M and returns excellent margins with AISC averaging less than $12.50/AgEq oz over the life of the mine. These costs highlight the benefits of existing local infrastructure, excellent metallurgy, and a straight-forward open pit mine with excellent grades and a low strip ratio.


“Importantly, the outstanding metrics demonstrated in the PEA are supported by a mine plan with more than 99% of tonnes in the Measured and Indicated category, and a simple and conventional process design based on our detailed metallurgical testwork program completed earlier this year. This provides us with a huge head start as we look ahead to the delivery of a Prefeasibility Study on Cordero in 2022.”



PEA SUMMARY



:


Study support

:

  • The Study is based on the updated Mineral Resource Estimate (“Resource”) press released on October 20, 2021 (see Appendices for Resource details), and the Company’s comprehensive metallurgical testwork program described in our press release dated September 7, 2021.
  • The PEA project team was led by Ausenco Engineering Canada Inc. (“Ausenco”), an industry leader in cost-effective design and construction. Ausenco was supported by AGP Mining Consultants Inc. (“AGP”) and Knight Piésold and Co. (USA) (“Knight Piésold”).


Project Economics:

Sensitivity of the Project’s expected after-tax NPV, IRR and payback at different commodity price assumptions is outlined in the table below:


Units
Base Case
Upside Case
Base Case +15%
Base Case -15%
After-Tax NPV (5% discount rate) (US$ M) $1,160 $1,889 $1,692 $622
Internal Rate of Return (%) 38.2 % 54.6 % 49.9 % 25.2 %
Payback (yrs) 2.0 1.4 1.6 3.5
  • Base Case price assumptions: Ag = $22.00/oz, Au = $1,600/oz, Pb = $1.00/lb, Zn = $1.20/lb
  • Upside Case price assumptions: Ag = $27.50/oz, Au = $1,880/oz, Pb = $1.10/lb, Zn = $1.45/lb based on one-year trailing 90

    th

    percentile prices


After-Tax Free Cash Flow:

A chart summarizing the expected annual and cumulative after-tax free cash flow (“FCF”) over the life-of-mine (“LOM”) is provided below:


https://www.globenewswire.com/NewsRoom/AttachmentNg/d1131062-ffa4-4091-b528-d23ac46806b3


Production & Costs:

Annual production over the LOM is expected to average 26 Moz AgEq with production averaging over 33 Moz AgEq when fully ramped up (Years 5 – 12); this positions Cordero as one of the largest silver mines globally.


Units
Year 1 – 4
Year 5 – 12
Year 13 -16
LOM
AgEq Produced – Average (Moz) 29 33 9 26
AgEq Payable – Average (Moz) 26 29 8 23
AgEq Produced – Total (Moz) 117 265 37 426
AgEq Payable – Total (Moz) 104 230 32 372
All-In Sustaining Cost (AISC) (US$/AgEq oz) $11.64 $11.77 $18.88 $12.35


Note – LOM production/payable totals include production from Year -1. AgEq Produced is metal recovered in doré/concentrate. AgEq Payable is metal payable from doré/concentrate and incorporates metal payment terms outlined in the Concentrate Terms section below. See Technical Disclosure section for AgEq and AISC calculation methodology.


LOM Production & AISC:


https://www.globenewswire.com/NewsRoom/AttachmentNg/dc1da013-9e05-4a0a-a7af-78b58ef8af4a


Note – Au/Pb/Zn production is shown on an AgEq basis based on: Ag = $22/oz, Au = $1,600/oz, Pb = $1.00/lb and Zn = $1.20/lb



OPERATIONS:


Mining:

The mine plan incorporates accelerated stripping as well as stockpiling of low-grade material in order to optimize the grade profile over the LOM.

  • The mine plan was completed by AGP and is based on a detailed mine design that incorporates mining dilution, safety berms and haul roads.
  • Mining rates over the life of the mine are relatively steady at 60 to 70 Mtpa.
  • The ultimate pit contains 719 Mt in total consisting of 228 Mt of mill feed and 491 Mt of waste for an average strip ratio of 2.2:1. The strip ratio is relatively even over the LOM.
  • Pit slope designs were based on an assessment by Knight Piésold that was supported by two geotechnical coreholes in the North Corridor and logging of core from two exploration coreholes in the South Corridor.


Processing:

Processing was broken into two phases to optimize the capital efficiency of the project.

  • Phase 1 throughput (Year -1 to Year 4)

    • Oxides: mined during the preproduction period and are crushed through the Phase 1 crushing plant and stacked on the heap leach from Year -1 to Year 3 at a throughput rate of 5 Mtpa. After Year 3 the Phase 1 crushing plant is dedicated to processing higher-value sulphide material with remaining oxide material processed as uncrushed ‘run-of-mine’ (“ROM”) material via heap leaching.
    • Sulphides: crushing, grinding and flotation circuit is constructed in Year -1 and processing occurs at a nameplate rate of 7.2 Mtpa from Year 1 to Year 4. During this period the mine plan focuses on high-grade material from the Pozo de Plata zone.
  • Phase 2 throughput (Year 5+)

    • Sulphides: two identical crushing, grinding and flotation circuits from Y5 onwards with total throughput of 14.4 Mtpa

Annual Throughput (Mt/a)
PHASE 1
PHASE 2

Year -1
Year 1
Year 2
Year 3
Year 4
Year 5+
Oxides / Heap Leach (Crushed) 5.0 5.0 5.0 5.0 – –
Sulphides / Milling – 5.8 7.2 7.2 10.8 14.4

Total Tonnes
5.0
10.8
12.2
12.2
10.8
14.4
  • Process design

    • Oxides: three-stage crushing (targeted crush size of 8 mm), agglomeration, heap leaching and refining in Year -1 to Year 3 and ROM dump leaching and refining in Year 4 to Year 6 to produce Ag-Au doré bars
    • Sulphides: three-stage crushing, grinding (targeted grind size of 200 micron) and flotation to produce Pb and Zn concentrates


Head grades:

The mine plan focuses on feeding higher grades to the mill earlier in the mine life:


  • Year 1 – 4:

    processing of higher-grade oxide material from the South Corridor and sulphide material predominantly from the Pozo de Plata zone

  • Year 5 – 12:

    processing of higher-grade sulphides from the NE Extension and the South Corridor

  • Year 13 – 16:

    processing of lower-grade material stockpiled during Year 1 to Year 12


HEAD GRADES
UNIT
PHASE 1
PHASE 2
LOM

Year 1 – 4
Year 5 – 12
Year 13 – 16

Oxides
Tonnes processed
(Mt)
25
4
–
29
Ag
(g/t)
 		37 29 – 36
Au
(g/t)
 		0.08 0.05 – 0.08

AgEq
(g/t)
43
33
–
42

Sulphides
Tonnes processed
(Mt)
31
115
52
199
Ag
(g/t)
 		57 32 13 31
Au
(g/t)
 		0.26 0.07 0.04 0.09
Pb
(%)
 		0.80 0.50 0.17 0.46
Zn
(%)
 		0.80 0.92 0.34 0.75

AgEq
(g/t)
118
88
34
80


Note – Phase 1 and LOM Oxide tonnes/grades include tonnes processed on the heap leach in Year -1


Recoveries:


  • Oxides:

    recoveries were based on coarse bottle roll tests and preliminary results from column leach tests completed in 2021. Recoveries average 56% for Ag and 63% for Au for crushed feed and 36% for Ag and 35% for Au for uncrushed ROM feed.

  • Sulphides:

    recoveries were based on the 2021 metallurgical test program which included lock-cycle tests and examined metal recoveries to the silver-lead concentrate and the silver-zinc concentrate at varying head grades for each of the major geological rock types at Cordero. Metal recoveries to the two concentrates are summarized below:

SULPHIDE RECOVERIES


(weighted average)
PHASE 1
PHASE 2
LOM

Year 1 – 4
Year 5 – 12
Year 13 – 16
Ag 92% 83% 67% 84%
Au 19% 19% 19% 19%
Pb 90% 86% 69% 86%
Zn 85% 86% 74% 85%


Tailings Management Facility (TMF):

  • The TMF design was completed by Knight Piésold and is based on a conventional thickened tailings dam facility of downstream construction type.
  • The TMF is located directly west of the open pit. The design incorporates five dam lifts over the LOM.
  • Total capacity of the TMF is 179M m

    3

    (252 Mt); this is significantly greater than the estimated volume requirement of 142M m

    3

    based on the PEA mine plan.
  • An evaluation of using a dry-stacked tailings facility will be completed as part of pre-feasibility work.



CONCENTRATE TERMS:


Metal Payable:

  • Cordero is expected to produce clean, highly saleable concentrates with minimal penalty elements as established in the 2021 metallurgical test program.
  • Industry standard payables and deductions were applied to the Pb and Zn concentrates as per the table below. A metallurgical balance summary is included in the Appendices.
  • Approximately 85% of the Ag reports to the Pb concentrate where higher payabilities are received.


Ag
Au
Pb
Zn

Pb Concentrate



Average concentrate grade LOM 2,900 g/t 1.6 g/t 52 % –
Payable metal 95 % 95 % 95 % –
Minimum deduction 50 g/t 1 g/t 3 units –

Zn Concentrate
Average concentrate grade LOM 300 g/t 0.5 g/t – 51 %
Payable metal 70 % 70 % – 85 %
Deduction 3 oz/t 1 g/t – –


Treatment/Refining Charges:

  • Treatment and refining charges were based on a review of spot and recent benchmark pricing and are summarized as follows:


PARAMETER
UNITS
PEA COST
SPOT
2021 BENCHMARK

TREATMENT/REFINING CHARGES
Treatment charge – Pb con
$/dmt
 		$100 ~$60 $140
Treatment charge – Zn con
$/dmt
 		$200 ~$80 $160
Ag refining charge – Pb con
$/oz
 		$1.00 ~$0.75 $1.50


Concentrate Transportation:

  • Transportation costs assume trucking of the concentrate via containers to the international port at Guaymas, Sonora, and then shipping via ocean freight to Asia.
  • Estimated transportation costs (trucking, port handling and ocean freight) are $128/wmt for Pb concentrate and $116/wmt for Zn concentrate.



CAPITAL EXPENDITURES:


Initial Capital


(for parallel processing of crushed oxides and sulphides)


  • Year -2:

    construction of on-site infrastructure, power line and the heap leach circuit with capacity of 5 Mtpa to process oxide/transition material (includes a three-stage oxide crushing circuit, heap leach pad/ponds and Merrill Crowe plant).

  • Year -1:

    first sulphide circuit with a capacity of 7.2 Mtpa (includes sulphide crushing circuit, ball mill and flotation plant) and construction of the TMF including the initial dam lift.


Expansion Capital

(

to expand plant to 14.4 Mtpa sulphides only)


  • Year 3:

    addition of second sulphide circuit to expand processing rate to 14.4 Mtpa by the addition of a ball mill and flotation circuit creating two parallel sulphide circuits. The crushing circuit previously used for oxides will be dedicated to sulphides from Year 4 onwards and will not require repurposing.

  • Year 8:

    expand flotation circuit with additional flotation cells, cyclones, filters and thickeners to accommodate the higher zinc grades from Year 9 to Year 11.


Sustaining Capital


  • TMF:

    the tailings dam will be completed in five lifts over the LOM at a total capital cost of $110 M ($15 M initial capex plus $95 M of sustaining capex).


    • Other:

      additional sustaining capex totals $113 M over the LOM and includes sustaining capital for the process plant and mobile equipment and replacements/refurbishments of infrastructure assets.

DESCRIPTION


(all in US$ millions)
INITIAL CAPITAL
EXPANSION CAPITAL
SUSTAINING LOM CAPEX
TOTAL



LOM CAPEX

Year -2
Year -1
Year 3
Year 8

CAPITAL EXPENDITURES
Mining $26 $1 $7 $33
Infrastructure $34 $9 $10 $16 $69
Heap Leach + Oxide Plant $71 $1 $4 $76
Sulphide Processing Plant $95 $51 $23 $30 $199
Tailings Facility (TMF) $15 $95 $110
Indirects $22 $30 $17 $6 $4 $78
Owners Costs $6 $6
Closure (net of Salvage Value) $22 $22
Contingency $28 $30 $16 $6 $29 $110

Capital Expenditures – Subtotals
$


187
$


181
$


94
$


35
$


208
$


704

$


368

PRE-SULPHIDE OPERATIONS
Revenue $121
Mining Costs ($110)
Process + G&A Costs ($27)

Operating Cash Flow for Year -1
($


16


)

NET FUNDING REQUIREMENT
$


384



OPERATING COST ASSUMPTIONS:


Mining:

  • Mining is assumed to be completed by contract mining; estimated mining costs were based on contractor quotes for Cordero received by AGP


Processing and G&A Costs:

  • Processing costs for the heap leach and mill/flotation, and G&A costs were developed by Ausenco from first principles.
  • Sulphide processing costs benefit from a conventional flotation process design and low power costs. The targeted coarse grind size of 200 micron alleviates the need for a SAG mill.
  • G&A costs estimates are based on a small camp and administration office at site. The majority of the work force will be Mexican nationals commuting daily from the local town of Parral. Parral is 25 km south of Cordero and has a population of approximately 100,000. It is the regional government centre in the southern part of Chihuahua State and has a well-established service industry that supports numerous local mining operations.


PARAMETER
UNITS
PEA COST

OPERATING COSTS
Mining – Mill Feed
$/t mined
 		$2.16
Mining – Waste
$/t mined
 		$2.04
Processing – Heap leach crushed
$/t stacked
 		$3.84
Processing – Heap leach ROM
$/t stacked
 		$1.39
Processing – Milling (7.2 Mtpa)
$/t milled
 		$7.01
Processing – Milling (14.4 Mtpa)
$/t milled
 		$6.57
Site G&A (14.4 Mtpa)
$/t milled
 		$0.86



OPPORTUNITIES



:

Work completed during the preparation of the PEA outlined a number of opportunities that have the potential to improve the economic and ESG performance of the project:


  • Mine life extension:

    there are over 300 Mt of Sulphide Resource that sit outside the PEA design pit but within the Resource pit shell. These resources as summarized below have the potential to extend the mine life and/or increase production levels at higher commodity prices.


Class
Tonnes
Grade
Contained Metal

Ag
Au
Pb
Zn
AgEq
Ag
Au
Pb
Zn
AgEq

(Mt)
(g/t)
(g/t)
(%)
(%)
(g/t)
(Moz)
(koz)
(Mlb)
(Mlb)
(Moz)
Measured 33 15 0.06 0.21 0.42
38
 		16 63 151 306 40
Indicated 187 16 0.04 0.23 0.45
40
 		94 221 952 1,869 238

M&I
220
 		16 0.04 0.23 0.45
39
 		110 284 1,103 2,175 278

Inferred
106
 		14 0.03 0.19 0.38
34
 		48 97 445 897 117


Note – the full Resource is provided in the Appendix; further details can be found in the Company’s October 21, 2021, press release.


  • Coarser grind size:

    metallurgical test work suggests higher recoveries may be achieved at coarse grind sizes (greater than the 200 micron used in the PEA). An evaluation of coarse particle flotation will be completed as part of the 2022 Prefeasibility Study (“PFS”). Coarse particle flotation has the potential to further reduce operating costs and water consumption.

  • Dry stack tailings:

    an evaluation of using dry stacked tailings to improve ESG performance will be completed as part of the PFS.



TECHNICAL DISCLOSURE



:

  • Inferred material, representing 0.9% of the mill feed, is included in the total mill feed. Inferred resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as reserves.
  • Mineral resources that are not mineral reserves do not have demonstrated economic viability.
  • Readers are cautioned that the PEA is preliminary in nature and that there is no certainty the estimates utilized in the PEA will be realized.
  • A full technical report will be prepared in accordance with NI 43-101 and will be filed on SEDAR within 45 days of this press release.
  • AgEq is calculated based on the following commodity prices: Ag – $22.00/oz, Au – $1,600/oz, Pb – $1.00/lb and Zn – $1.20/lb.
  • All-in Sustaining cost (AISC) is calculated as: [Operating costs (mining, processing and G&A) + Royalties + Concentrate Transportation + Treatment & Refining Charges + Concentrate Penalties + Sustaining Capital (includes capital for TMF dams lifts with capacity for less than five years) + Closure Costs] / Payable AgEq ounces



APPENDIX



:

An appendix with the following supporting information can be found at the end of the release or the following link: Appendices

Appendix A – Mineral Resource Estimate

Appendix B – After-Tax NPV/IRR/Payback Sensitivities

Appendix C – Pit Optimisation Parameters

Appendix D – LOM Mine Plan Summary

Appendix E – LOM Process Throughput Summary

Appendix F – Simplified Process Flowsheets

Appendix G – Metallurgical Balance Summary

Appendix H – Long Sections / Cross Sections

Appendix I – Site Layout

Appendix J – LOM Production & Cash Flow Schedule



About Discovery



:

Discovery’s flagship project is its 100%-owned Cordero project, one of the world’s largest silver deposits. The PEA completed in November 2021 demonstrates that Cordero has the potential to be developed into a highly capital efficient mine that offers the combination of margin, size and scaleability. Cordero is located close to infrastructure in a prolific mining belt in Chihuahua State, Mexico. Continued exploration and project development at Cordero is supported by an industry leading balance sheet with cash of over C$75 million. Discovery was a recipient of the 2020 TSX Venture 50 award and the 2021 OTCQX Best 50 award.


On Behalf of the Board of Directors,


Taj Singh, M.Eng, P.Eng, CPA,


President, Chief Executive Officer and Director


For further information contact:


Forbes Gemmell, CFA


VP Corporate Development & Investor Relations

Phone: 416-613-9410

Email:

[email protected]


Website:

www.discoverysilver.com



Qualified




Person

The PEA for the Company’s Cordero project as summarized in this release was completed by Ausenco with support from by AGP and Knight Piésold. A full technical report supporting the PEA will be prepared in accordance with NI 43-101 and will be filed on SEDAR within 45 days of this press release. The scientific and technical content of this press release was reviewed and approved by Taj Singh, P Eng., President & CEO, who is a “Qualified Person” as defined by

National Instrument 43-101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).



FORWARD-LOOKING STATEMENTS



:


Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.


This news release is not for distribution to United States newswire services or for dissemination in the United States.

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States of America. The securities have not been and will not be registered under the United States Securities Act of 1933, as amended (the “1933 Act”) or any state securities laws and may not be offered or sold within the United States or to, or for account or benefit of, U.S. Persons (as defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws, or an exemption from such registration requirements is available.


Cautionary Note Regarding Forward-Looking Statements

This news release may include forward-looking statements that are subject to inherent risks and uncertainties. All statements within this news release, other than statements of historical fact, are to be considered forward looking. Although Discovery believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those described in forward-looking statements. Factors that could cause actual results to differ materially from those described in forward-looking statements include fluctuations in market prices, including metal prices, continued availability of capital and financing, and general economic, market or business conditions. There can be no assurances that such statements will prove accurate and, therefore, readers are advised to rely on their own evaluation of such uncertainties. Discovery does not assume any obligation to update any forward-looking statements except as required under applicable laws.



APPENDIX A – MINERAL RESOURCE ESTIMATE



SULPHIDE RESOURCE



(assumed to be processed via mill/flotation)


NSR $/t

cut-off
Class
Tonnes
Grade
Contained Metal

Ag
Au
Pb
Zn
AgEq
Ag
Au
Pb
Zn
AgEq

(Mt)
(g/t)
(g/t)
(%)
(%)
(g/t)
(Moz)
(koz)
(Mlb)
(Mlb)
(Moz)

$7.25/t

 Measured 128 22 0.08 0.31 0.52
52
 		89 328 881 1,470
212
Indicated 413 19 0.05 0.28 0.51
47
 		255 707 2,543 4,663
625

M&I
541
20
0.06
0.29
0.51
48
344
1,035
3,424
6,132
837

Inferred
108
14
0.03
0.19
0.38
34
49
99
451
909
119



OXIDE/TRANSITION RESOURCE



(assumed to be processed by heap leaching)


NSR $/t

cut-off
Class
Tonnes
Grade
Contained Metal
% Oxide / %

Trans

Ag
Au
AgEq
Ag
Au
AgEq

(Mt)
(g/t)
(g/t)
(g/t)
(Moz)
(koz)
(Moz)

$4.78/t

 Measured 23 20 0.06 25 15 43 19 92% / 8%
Indicated 75 19 0.05 23 45 125 56 87% / 13%

M&I
98
19
0.05
23
60
168
74
88% / 12%

Inferred
35
16
0.04
20
18
44
22
63% / 37%



SUPPORTING TECHNICAL DISCLOSURE FOR RESOURCE



:

  • Mineral resources that are not mineral reserves do not have demonstrated economic viability.
  • AgEq for the Sulphide Resource is calculated as Ag + (Au x 16.07) + (Pb x 32.55) + (Zn x 35.10); these factors are based on commodity prices of Ag – $24.00/oz, Au – $1,800/oz, Pb – $1.10/lb, Zn – $1.20/lb and assumed recoveries of Ag – 84%, Au – 18%, Pb – 87% and Zn – 88%.
  • AgEq for the Oxide/Transition Resource is calculated as Ag + (Au x 87.5); this factor is based on commodity prices of Ag – $24.00/oz and Au – $1,800/oz and assumed recoveries of Ag – 60% and Au – 70%.
  • The Resource is constrained by a pit optimisation based on the following commodity prices: Ag – $24.00/oz, Au – $1,800/oz, Pb – $1.10/lb, Zn – $1.20/lb. Additional parameters for the pit constraint are provided in the Company’s October 20, 2021, press release.
  • Individual metals are reported at 100% of in-situ grade.
  • The effective date of the Resource is October 20, 2021, and is based on drilling through July 2021.
  • There are no known legal, political, environmental or other risks that could materially affect the potential development of the Resource.
  • A full technical report supporting the Resource will be prepared in accordance with NI 43-101 and will be filed on SEDAR within 45 days of the October 20, 2021, Resource press release.



APPENDIX B: AFTER-TAX NPV / IRR / PAYBACK SENSITIVITIES

Sensitivity of the Project’s NPV, IRR and payback at different Ag and Zn price assumptions is outlined in the table below. For these sensitivities the Au and Pb prices have been fixed at $1,600/oz and $1.00/lb respectively. The Base Case scenario for the PEA is highlighted in grey below and assumes Ag – $22.00/oz, Au – $1,600/oz, Pb – $1.00/lb and Zn – $1.20/lb.



Ag ($/oz)

$


18.00
$


20.00
$


22.00
$


25.00
$


30.00



NPV

(5%)
IRR
Payback
NPV

(5%)
IRR
Payback
NPV

(5%)
IRR
Payback
NPV

(5%)
IRR
Payback
NPV

(5%)
IRR
Payback



(US$M)
(%)
(yrs)
(US$M)
(%)
(yrs)
(US$M)
(%)
(yrs)
(US$M)
(%)
(yrs)
(US$M)
(%)
(yrs)

Zn

($/lb)
$


1.05
 		$715 27.2 % 3.3 $866 31.5 % 2.7 $1,016 35.8 % 2.2 $1,238 42.0 % 1.8 $1,607 52.5 % 1.4

$


1.10
 		$765 28.2 % 3.2 $915 32.4 % 2.6 $1,064 36.6 % 2.1 $1,286 42.8 % 1.8 $1,655 53.2 % 1.4

$


1.20
 		$863 30.0 % 3.1 $1,013 34.1 % 2.5
$


1,160
38.2
%
2.0
 		$1,382 44.3 % 1.7 $1,751 54.5 % 1.4

$


1.30
 		$961 31.7 % 2.9 $1,109 35.8 % 2.3 $1,257 39.7 % 2.0 $1,478 45.7 % 1.7 $1,848 55.8 % 1.4

$


1.45
 		$1,105 34.2 % 2.7 $1,253 38.1 % 2.2 $1,401 42.0 % 1.9 $1,622 47.8 % 1.6 $1,992 57.8 % 1.3



APPENDIX C – PIT OPTIMISATION PARAMETERS



:

The PEA mine plan was based on a pit optimization that utilised the following parameters:


PARAMETER
UNITS
Ag
Au
Pb
Zn

COMMODITY PRICES
$/oz or $/lb
 		$ 20.00 $ 1,600 $ 0.95 $ 1.05

ROYALTY
%
 		0.5 % 0.5 % – –

PIT SLOPE ASSUMPTIONS
 		Five sectors were modeled based on core logging and two geotechnical holes with inter-ramp angles ranging from 40

o

to 59

o

PROCESS RECOVERIES
Heap Leach (Oxide/Transition)
%
 		60 % 70 % – –

Flotation (Sulphide)
Breccia – Volcanic
Recovery to Pb concentrate
%
 		79 % 13 % 91 % –
Recovery to Zn concentrate
%
 		11 % 7 % – 88 %
Breccia – Sedimentary



Recovery to Pb concentrate
%
 		75 % 12 % 89 % –
Recovery to Zn concentrate
%
 		9 % 4 % – 86 %
Volcanic



Recovery to Pb concentrate
%
 		70 % 13 % 85 % –
Recovery to Zn concentrate
%
 		13 % 6 % – 81 %
Sedimentary



Recovery to Pb concentrate
%
 		70 % 13 % 83 % –
Recovery to Zn concentrate
%
 		10 % 5 % – 89 %

METAL PAYABLE
Dore (Heap Leach) 98 % 99.9 %
–
–

Concentrate (Flotation)



Pb concentrate 95 % 95 % 95 % –
Zn concentrate 70 % 70 % – 85 %

OPERATING COSTS
 		Base Per 10m below 1550m elev.
Mining cost – Mill Feed
$/t mined
 		$ 1.54 +$

 0.024
Mining cost – Waste
$/t mined
 		$ 1.64 +$

 0.024
Processing cost – Heap leach (14,000 tpd)
$/t stacked
 		$ 3.92
Processing cost – Flotation (40,000 tpd)
$/t milled
 		$ 6.39
G&A (40,000 tpd)
$/t milled
 		$ 0.86

TREATMENT/REFINING CHARGES
Treatment charge – Pb con
$/dmt
 		$ 100
Treatment charge – Zn con
$/dmt
 		$ 200
Ag refining charge – Pb con
$/oz
 		$ 1.00



APPENDIX D – LOM MINE PLAN SUMMARY


https://www.globenewswire.com/NewsRoom/AttachmentNg/8166015b-ee80-4827-b8e3-23bacc987d76



APPENDIX E – LOM PROCESS THROUGHPUT SUMMARY


https://www.globenewswire.com/NewsRoom/AttachmentNg/8166015b-ee80-4827-b8e3-23bacc987d76



APPENDIX F – SIMPLIFIED PROCESS FLOWSHEETS


https://www.globenewswire.com/NewsRoom/AttachmentNg/b88056d2-d72a-4018-bf8f-b849b808fdc9



PHASE 1



:


https://www.globenewswire.com/NewsRoom/AttachmentNg/885c2668-aea9-4dea-ba22-ed401e1821c3



PHASE 2



:


https://www.globenewswire.com/NewsRoom/AttachmentNg/cb701e57-5f13-428e-8935-165e82a05cea



APPENDIX G – METALLURGICAL BALANCE SUMMARY


UNITS
PHASE 1
PHASE 2
LOM

Years 1 – 4
Years 5 – 12
Years 13 – 16

Ag
Au
Pb
Zn
Ag
Au
Pb
Zn
Ag
Au
Pb
Zn
Ag
Au
Pb
Zn

MET BALANCE
Average head grade g/t or % 57 0.26 0.80 0.80 32 0.07 0.50 0.92 13 0.04 0.17 0.34 31 0.09 0.46 0.75
Recovered to Pb Con % 81 % 13 % 90 % 6 % 71 % 13 % 86 % 6 % 56 % 13 % 69 % 3 % 73 % 13 % 86 % 5 %
Recovered to Zn Con % 12 % 6 % 3 % 85 % 12 % 6 % 3 % 86 % 11 % 6 % 3 % 74 % 12 % 6 % 3 % 85 %
Tailings % 7 % 81 % 7 % 9 % 17 % 81 % 11 % 8 % 33 % 81 % 28 % 22 % 16 % 81 % 11 % 10 %
Total % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 %

CONCENTRATE GRADES
Pb Concentrate g/t or % 3,490 2.5 54 % – 2,802 1.1 52 % – 2,657 2.1 43 % – 2,939 1.6 52 % –
Zn Concentrate g/t or % 524 1.3 – 52 % 254 0.3 – 51 % 285 0.5 – 50 % 298 0.5 – 51 %



APPENDIX H – LONG SECTIONS / CROSS SECTIONS



:


https://www.globenewswire.com/NewsRoom/AttachmentNg/5771cce0-8ad4-46df-8646-38d597111fd2



LONG SECTION A-A’ (looking NW)


https://www.globenewswire.com/NewsRoom/AttachmentNg/3c5a9654-d929-49f3-aa0e-7848e33ba990



LONG SECTION B-B’ (looking NW)


https://www.globenewswire.com/NewsRoom/AttachmentNg/f6c7f47c-cba9-4350-971d-2811424eae5e



CROSS SECTION C-C’ (looking NE)


https://www.globenewswire.com/NewsRoom/AttachmentNg/15065795-2109-4f47-9c2b-bd5929581770



CROSS SECTION D-D’ (looking NE)


https://www.globenewswire.com/NewsRoom/AttachmentNg/bf7ee835-3444-44b1-8cd4-5cb9f9c9d951



CROSS SECTION E-E’ (looking NE)


https://www.globenewswire.com/NewsRoom/AttachmentNg/1b503900-7edc-4827-9b5d-7372bc5ebe8d



APPENDIX I – SITE LAYOUT



:


https://www.globenewswire.com/NewsRoom/AttachmentNg/a92066eb-ca65-4ac8-91f5-fba03c554b65



APPENDIX J – PRODUCTION & CASH FLOW SCHEDULE



:


Units
Total/Avg
Y-2
Y-1
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17+


MINING
Mineralized Material Mined mt 228 1 14 23 18 18 24 18 19 19 19 21 16 12 5 0 — — — —
Waste Mined
mt
 		491 6 41 49 49 47 41 47 46 41 44 40 26 10 3 0 — — — —
Total Material Mined
mt
 		719 8 55 72 67 65 65 65 65 60 63 61 42 22 8 0 — — — —
Mining Rate
ktpd

 137 22 157 206 192 186 186 186 186 171 181 175 121 62 22 1 — — — —
Strip Ratio
w:o
 		2.2 5.2 2.8 2.2 2.7 2.7 1.8 2.5 2.5 2.2 2.3 1.9 1.6 0.8 0.6 0.1 — — — —


PROCESSING
CRUSHED OXIDES / HEAP LEACH:
Heap Leach Crushed Tonnes
mt
 		20 — 5 5 5 5 — — — — — — — — — — — — — —
Stacked Grades:
Ag
g/t
 		42 — 58 38 35 35 — — — — — — — — — — — — — —
Au
g/t
 		0.09 — 0.08 0.10 0.09 0.08 — — — — — — — — — — — — — —
AgEq
g/t
 		48 — 64 46 41 41 — — — — — — — — — — — — — —
ROM OXIDES / HEAP LEACH:
Heap Leach ROM Tonnes
mt
 		9 — — — — — 5 4 0 — — — — — — — — — — —
Stacked Grades:
Ag
g/t
 		24 — — — — — 18 28 44 — — — — — — — — — — —
Au
g/t
 		0.06 — — — — — 0.07 0.05 0.08 — — — — — — — — — — —
AgEq
g/t
 		28 — — — — — 23 32 50 — — — — — — — — — — —
SULPHIDES / FLOTATION:
Milling Rate
ktpd
 		36 — — 16 21 21 31 41 41 41 41 41 41 41 41 41 41 41 26 —
Sulphide Tonnes Processed
mt
 		199 — — 6 7 7 11 14 14 14 14 14 14 14 14 14 14 14 9 —
Mill Head Grade:
Ag
g/t
 		31 — — 62 63 61 48 35 34 31 30 43 37 29 23 13 13 13 12.6 —
Au
g/t
 		0.09 — — 0.19 0.41 0.36 0.15 0.07 0.08 0.07 0.07 0.08 0.07 0.07 0.06 0.04 0.04 0.04 0.04 —
Pb
%
 		0.46 % — — 0.74 % 1.04 % 0.91 % 0.62 % 0.46 % 0.52 % 0.39 % 0.39 % 0.66 % 0.67 % 0.53 % 0.37 % 0.17 % 0.16 % 0.16 % 0.16 % —
Zn
%
 		0.75 % — — 0.92 % 0.79 % 0.74 % 0.77 % 0.86 % 0.92 % 0.79 % 0.81 % 1.33 % 1.15 % 0.90 % 0.62 % 0.36 % 0.34 % 0.34 % 0.34 % —
AgEq
g/t
 		80 — — 132 155 143 107 87 90 78 78 119 106 84 62 35 33 33 33 —
Lead Concentrate – Recovery:
Ag
%
 		73 % — — 81 % 82 % 82 % 77 % 71 % 71 % 70 % 70 % 79 % 72 % 67 % 66 % 56 % 56 % 56 % 56 % —
Au
%
 		13 % — — 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % 13 % —
Pb
%
 		86 % — — 90 % 91 % 90 % 90 % 85 % 87 % 85 % 85 % 89 % 88 % 87 % 84 % 69 % 69 % 69 % 69 % —
Zinc Concentrate – Recovery:
Ag
%
 		12 % — — 12 % 11 % 12 % 12 % 12 % 12 % 12 % 12 % 12 % 12 % 12 % 12 % 11 % 11 % 11 % 11 % —
Au
%
 		6 % — — 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % 6 % —
Zn
%
 		85 % — — 86 % 86 % 85 % 84 % 86 % 86 % 86 % 86 % 88 % 88 % 87 % 81 % 74 % 74 % 74 % 74 % —


PRODUCTION PROFILE
METAL PRODUCED:
Ag – Oxides
moz
 		17 — 5 3 3 3 1 1 0 — — — — — — — — — — —
Au – Oxides
koz
 		42 — 8 10 9 8 3 2 0 — — — — — — — — — — —
AgEq – Oxides Metal Produced
moz
 		20 — 6 4 4 4 1 2 0 — — — — — — — — — — —
Ag – Sulphides
moz
 		167 — — 11 14 13 15 13 13 12 11 18 14 10 8 4 4 4 2.5 —
Au – Sulphides
koz
 		113 — — 6 18 15 10 6 7 6 6 7 6 6 6 4 4 4 2 —
Pb – Sulphides
mlbs
 		1,727 — — 84 149 130 132 123 145 106 105 187 187 145 100 38 36 36 23 —
Zn – Sulphides
mlbs
 		2,773 — — 100 108 100 154 235 251 215 221 369 320 248 159 84 79 79 51 —
AgEq – Sulphides Metal Produced
moz
 		405 — — 20 28 26 30 32 34 29 29 47 41 31 22 11 10 10 6.5 —
Ag – Total
moz
 		185 — 5 14 17 16 16 15 13 12 11 18 14 10 8 4 4 4 2.5 —
Au – Total
koz
 		155 — 8 17 26 23 13 9 7 6 6 7 6 6 6 4 4 4 2 —
Pb – Total
mlbs
 		1,727 — — 84 149 130 132 123 145 106 105 187 187 145 100 38 36 36 23 —
Zn – Total
mlbs
 		2,773 — — 100 108 100 154 235 251 215 221 369 320 248 159 84 79 79 51 —

AgEq – Total Metal Produced

moz
426
—
6
25
32
29
31
34
34
29
29
47
41
31
22
11
10
10
6.5
—
METAL PAYABLE:
Ag – Oxides
moz
 		17 — 5 3 3 3 1 1 0 — — — — — — — — — — —
Au – Oxides
koz
 		42 — 8 10 9 8 3 2 0 — — — — — — — — — — —
AgEq – Oxides Metal Payable
moz
 		20 — 6 4 4 4 1 2 0 — — — — — — — — — — —
Ag – Sulphides
moz
 		148 — — 10 12 12 13 12 11 10 10 16 12 9 7 4 3 3 2 —
Au – Sulphides
koz
 		41 — — 2 10 9 3 1 0 1 1 5 4 0 1 1 1 1 1 —
Pb – Sulphides
mlbs
 		1,626 — — 80 141 123 124 116 136 100 99 176 177 136 94 36 33 33 21 —
Zn – Sulphides
mlbs
 		2,340 — — 84 91 84 130 198 212 181 186 312 271 209 134 70 67 67 43 —
AgEq – Sulphides Metal Payable
moz
 		352 — — 18 25 23 26 28 29 25 25 41 36 27 19 9 9 9 6 —
Ag – Total
moz
 		165 — 5 13 16 15 14 13 11 10 10 16 12 9 7 4 3 3 2 —
Au – Total
koz
 		83 — 8 12 19 16 6 3 1 1 1 5 4 0 1 1 1 1 1 —
Pb – Total
mlbs
 		1,626 — — 80 141 123 124 116 136 100 99 176 177 136 94 36 33 33 21 —
Zn – Total
mlbs
 		2,340 — — 84 91 84 130 198 212 181 186 312 271 209 134 70 67 67 43 —

AgEq – Total Metal Payable

moz
372
—
6
22
28
27
27
30
29
25
25
41
36
27
19
9
9
9
6
—


REVENUE
OXIDE REVENUES:
Ag Revenue
US$mm
 		$ 376 — $ 112 $ 74 $ 67 $ 68 $ 22 $ 29 $ 3 — — — — — — — — — — —
Au Revenue
US$mm
 		$ 67 — $ 13 $ 17 $ 14 $ 13 $ 6 $ 4 $ 0 — — — — — — — — — — —
Gross Revenue – Oxides
US$mm
 		$ 443 — $ 126 $ 91 $ 82 $ 81 $ 27 $ 33 $ 3 — — — — — — — — — — —
Treatment & Refining Charges
US$mm
 		$ 18 — $ 5 $ 3 $ 3 $ 3 $ 1 $ 1 $ 0 — — — — — — — — — — —

Net Revenue – Oxides

US$mm
$
425
—
$
121
$
87
$
78
$
78
$
26
$
32
$
3
—
—
—
—
—
—
—
—
—
—
—
SULPHIDE REVENUES:
Ag Revenue
US$mm
 		$ 3,250 — — $ 212 $ 275 $ 264 $ 292 $ 261 $ 249 $ 225 $ 220 $ 345 $ 274 $ 200 $ 158 $ 78 $ 75 $ 75 $ 48 —
Au Revenue
US$mm
 		$ 66 — — $ 3 $ 16 $ 14 $ 5 $ 1 $ 1 $ 2 $ 2 $ 7 $ 6 $ 0 $ 1 $ 2 $ 2 $ 2 $ 1 —
Pb Revenue
US$mm
 		$ 1,626 — — $ 80 $ 141 $ 123 $ 124 $ 116 $ 136 $ 100 $ 99 $ 176 $ 177 $ 136 $ 94 $ 36 $ 33 $ 33 $ 21 —
Zn Revenue
US$mm
 		$ 2,808 — — $ 101 $ 110 $ 101 $ 156 $ 238 $ 255 $ 217 $ 224 $ 375 $ 325 $ 251 $ 160 $ 84 $ 80 $ 80 $ 51 —
Gross Revenue – Sulphides
US$mm
 		$ 7,751 — — $ 396 $ 541 $ 502 $ 577 $ 616 $ 641 $ 544 $ 544 $ 903 $ 782 $ 588 $ 414 $ 200 $ 191 $ 191 $ 122 —
Treatment & Refining Charges
US$mm
 		$ 780 — — $ 33 $ 43 $ 39 $ 51 $ 64 $ 68 $ 57 $ 58 $ 96 $ 84 $ 65 $ 44 $ 22 $ 21 $ 21 $ 14 —
Total Penalties
US$mm
 		$ 33 — — $ 1 $ 1 $ 1 $ 2 $ 3 $ 3 $ 2 $ 2 $ 4 $ 4 $ 3 $ 2 $ 1 $ 1 $ 1 $ 1 —

Net Revenue – Sulphides

US$mm
$
6,938
—
—
$
362
$
497
$
461
$
524
$
550
$
570
$
485
$
484
$
803
$
695
$
520
$
368
$
177
$
168
$
168
$
108
—

Net Revenue – Total

US$mm
$
7,364
—
$
121
$
449
$
575
$
539
$
550
$
581
$
573
$
485
$
484
$
803
$
695
$
520
$
368
$
177
$
168
$
168
$
108
—


OPERATING COSTS
UNIT COSTS:
Mine (Includes Rehandling Costs)
US$/t Moved
 		$ 2.23 — $ 2.00 $ 1.92 $ 1.91 $ 1.88 $ 1.90 $ 1.97 $ 2.03 $ 2.06 $ 2.16 $ 2.35 $ 2.45 $ 2.35 $ 1.86 $ 1.16 $ 1.03 $ 1.03 $ 1.23 —
Processing – Crushed Oxide Heap Leach
US$/t Stacked
 		$ 3.84 — $ 3.84 $ 3.84 $ 3.84 $ 3.84 — — — — — — — — — — — — — —
Processing – ROM Oxide Heap Leach
US$/t Stacked
 		$ 1.34 — — — — — $ 1.29 $ 1.39 $ 1.44 — — — — — — — — — — —
Processing – Sulphide
US$/t Milled
 		$ 6.59 — — $ 7.13 $ 7.01 $ 7.01 $ 6.58 $ 6.47 $ 6.47 $ 6.47 $ 6.47 $ 6.57 $ 6.57 $ 6.57 $ 6.57 $ 6.57 $ 6.57 $ 6.57 $ 6.57 —
Site G&A Costs
US$/t Processed
 		$ 0.85 — $ 1.45 $ 0.94 $ 0.83 $ 0.83 $ 1.14 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 $ 0.86 —
OPERATING COSTS INCURED:
Mine (Includes Rehandling Costs)
US$mm
 		$ 1,602 — $ 110 $ 147 $ 133 $ 128 $ 136 $ 135 $ 136 $ 131 $ 143 $ 144 $ 107 $ 62 $ 32 $ 17 $ 15 $ 15 $ 11 —
Processing – Crushed Oxide Heap Leach
US$mm
 		$ 77 — $ 19 $ 19 $ 19 $ 19 — — — — — — — — — — — — — —
Processing – ROM Oxide Heap Leach
US$mm
 		$ 12 — — — — — $ 6 $ 6 $ 0 — — — — — — — — — — —
Processing – Sulphides
US$mm
 		$ 1,309 — — $ 41 $ 50 $ 50 $ 71 $ 93 $ 93 $ 93 $ 93 $ 95 $ 95 $ 95 $ 95 $ 95 $ 95 $ 95 $ 61 —
Site G&A Costs
US$mm
 		$ 194 — $ 7 $ 10 $ 10 $ 10 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 12 $ 8 —

Total Operating Costs

US$mm
$
3,193
—
$
136
$
218
$
213
$
208
$
226
$
246
$
242
$
236
$
248
$
251
$
214
$
169
$
139
$
124
$
122
$
122
$
80
—
NSR – Government
US$mm
 		$ 18 — $ 1 $ 1 $ 2 $ 2 $ 2 $ 1 $ 1 $ 1 $ 1 $ 2 $ 1 $ 1 $ 1 $ 0 $ 0 $ 0 $ 0 —
Concentrate Transportation
US$mm
 		$ 527 — — $ 21 $ 29 $ 26 $ 34 $ 42 $ 46 $ 38 $ 38 $ 64 $ 58 $ 46 $ 31 $ 15 $ 14 $ 14 $ 9 —

Total Costs

US$mm
$
3,738
—
$
137
$
240
$
244
$
236
$
261
$
289
$
290
$
275
$
287
$
317
$
273
$
216
$
171
$
139
$
137
$
137
$
90
—
CASH COSTS:
Co-Product
Operating Cash Costs
US$/oz AgEq
 		$ 8.34 — — $ 9.82 $ 7.52 $ 7.84 $ 8.22 $ 8.34 $ 8.27 $ 9.56 $ 10.04 $ 6.12 $ 6.01 $ 6.34 $ 7.39 $ 13.61 $ 14.07 $ 14.07 $ 14.40 —
Total Cash Costs
US$/oz AgEq
 		$ 12.07 — — $ 12.57 $ 10.29 $ 10.55 $ 11.47 $ 12.10 $ 12.31 $ 13.52 $ 14.06 $ 10.17 $ 10.13 $ 10.63 $ 11.50 $ 17.91 $ 18.34 $ 18.34 $ 18.67 —

All-in Sustaining Costs

US$/oz AgEq
$
12.35
—
—
$
12.98
$
11.40
$
10.76
$
11.65
$
12.20
$
12.64
$
13.65
$
14.24
$
10.27
$
10.21
$
10.74
$
11.66
$
18.24
$
19.12
$
18.69
$
19.85
—


CAPITAL EXPENDITURES
Initial/Expansion Capex
US$mm
 		$497 $187 $181 — — $94 — — — — $35 — — — — — — — —
Sustaining Capex (incl. Closure net of Salvage)
US$mm
 		$208 — — $9 $31 $6 $36 $3 $10 $3 $4 $31 $3 $3 $3 $3 $31 $3 $7 $22

Total Capital Expenditures

US$mm
$


704
$


187
$


181
$


9
$


31
$


99
$


36
$


3
$


10
$


3
$


39
$


31
$


3
$


3
$


3
$


3
$


31
$


3
$


7
$


22


FREE CASH FLOW VALUATION

Net Revenue

US$mm
$


7,364
—
$


121
$


449
$


575
$


539
$


550
$


581
$


573
$


485
$


484
$


803
$


695
$


520
$


368
$


177
$


168
$


168
$


108
—
Operating Expenses
US$mm
 		($3,193) — ($136) ($218) ($213) ($208) ($226) ($246) ($242) ($236) ($248) ($251) ($214) ($169) ($139) ($124) ($122) ($122) ($80) —
Royalties + Concentrate Transportation
US$mm
 		($545) — ($1) ($23) ($31) ($28) ($35) ($43) ($48) ($39) ($39) ($66) ($59) ($47) ($31) ($16) ($15) ($15) ($10) —

EBITDA

US$mm
$


3,625
—
($


16


)
$


209
$


331
$


303
$


289
$


292
$


284
$


210
$


196
$


485
$


422
$


304
$


198
$


37
$


32
$


32
$


19
—
Capital Expenditures
US$mm
 		($704) ($187) ($181) ($9) ($31) ($99) ($36) ($3) ($10) ($3) ($39) ($31) ($3) ($3) ($3) ($3) ($31) ($3) ($7) ($22)

Pre-Tax Free Cash Flow

US$mm
$


2,921
($


187


)
($


198


)
$


200
$


300
$


204
$


253
$


289
$


274
$


207
$


157
$


455
$


419
$


301
$


195
$


34
$


1
$


29
$


12
($


22


)
Mining Tax
US$mm
 		(273) — — ($16) ($25) ($23) ($22) ($22) ($21) ($16) ($15) ($36) ($32) ($23) ($15) ($3) ($2) ($2) ($1) —
Income Tax Payable
US$mm
 		(784) — — ($9) ($68) ($64) ($51) ($62) ($58) ($46) ($47) ($120) ($110) ($82) ($52) ($8) — ($4) ($2) —

Post-Tax Free Cash Flow

US$mm
$


1,864
($


187


)
($


198


)
$


175
$


207
$


117
$


180
$


205
$


195
$


145
$


95
$


299
$


277
$


196
$


127
$


23
($


2


)
$


22
$


8
($


22


)

Pre-Tax
Post-Tax

NPV (5%)

US$mm
$


1,858
$


1,160

IRR

%
50.3


%
38.2


%

Payback

Yrs
1.6
2.0



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November 30, 2021 – 3:00 AM PST

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