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VOLUME NO. 0205/16

Skeena Delivers Robust Project Economics for Eskay Creek: After-Tax NPV5% of C$638M, 51% IRR and 1.2 Year Payback

ACCESS Newswire
07 Nov 2019, 18:31 GMT+10

VANCOUVER, BC / ACCESSWIRE / November 7, 2019 / Skeena Resources Limited (TSX.V:SKE) (OTCQX:SKREF) ('Skeena' or the 'Company') is pleased to announce the initial Preliminary Economic Assessment ('PEA') completed by Ausenco Engineering Canada Inc. ('Ausenco'), supported by SRK Consulting (Canada), and AGP Mining Consultants, for the Eskay Creek gold-silver project ('Eskay Creek' or the 'Project') located in the Golden Triangle of British Columbia.

Eskay Creek 2019 PEA Highlights:

  • High-grade open-pit averaging 3.23 g/t Au, 78 g/t Ag (4.17 g/t AuEq) (diluted)
  • After-tax NPV5% of C$638M (US$491M) and 51% IRR at US$1,325/oz Au and US$16/oz Ag
  • After-tax payback period of 1.2 years
  • Pre-production capital expenditures (CAPEX) of C$303M (US$233M)
  • After-tax NPV:CAPEX Ratio of 2.1:1
  • Life of mine ('LOM') average annual production of 236,000 oz Au, 5,812,000 oz Ag (306,000 oz AuEq)
  • LOM all-in sustaining costs (AISC) of C$983/oz (US$757/oz) AuEq recovered
  • LOM cash costs of C$949/oz (US$731/oz) AuEq recovered
  • 6,850 tonne per day (TPD) mill and flotation plant producing saleable concentrate

1. Exchange Rate (US$/C$) of 0.77
2. Cash costs are inclusive of mining costs, processing costs, site G&A, treatment and refining charges and royalties
3. AISC includes cash costs plus estimated corporate G&A, sustaining capital and closure costs
4. Gold Equivalent (AuEq) calculated via the formula: Au (g/t) + [Ag (g/t) / 82.8]

Skeena's CEO, Walter Coles commented, 'Eskay Creek was a remarkable discovery that became an extraordinary underground mine in 1994 and produced until 2008. This PEA demonstrates that Eskay Creek still has a bright future ahead, revitalized as an open-pit gold and silver mine, with the additional possibility for underground mining. The Project has the potential to produce an average of 306,000 gold-equivalent ounces per year with a diluted mill feed grade of 4.17 grams per tonne gold-equivalent. Also, as a brownfield site, Eskay Creek benefits from tremendous infrastructure installed by the previous operators. Finally, by creating a gold concentrate rather than doré, we are able to keep initial capital costs very low, at US$233 million, relative to the amount of precious metals produced; this also simplifies and reduces technical risks for the Project.'

PEA Overview

The 2019 Eskay Creek PEA considers an open-pit mine with on-site treatment of the mined material by conventional milling and flotation to recover a gold-silver concentrate for provision to third-party smelters. The mine will be an owner-operated, standard truck and shovel open-pit, with a leased mining fleet. At present, no contributions from previously reported underground resources are incorporated into this study. The processing capacity of 6,850 tonnes per day will result in a production lifespan of 8.6 years. An additional 1.5 years of pre-stripping, stockpiling and mine access development is planned prior to the processing facility becoming fully operational in Year 1. The PEA leverages Eskay Creek's extensive existing infrastructure, including all-weather access roads, previously permitted tailing storage facilities (TSF) and proximity to the recently commissioned 195 MW hydroelectric facilities and linked power grid.

The PEA is derived from the Company's pit-constrained resource estimate (February 28, 2019), and does not include results from the recently initiated and ongoing 2019 Phase I infill drilling program. The effective date of the PEA is November 7, 2019 and a technical report will be filed on the Company's website and SEDAR within 45 days of this disclosure.

Mineral resources are not mineral reserves and do not have demonstrated economic viability. The PEA is preliminary in nature and includes inferred mineral resources that are too speculative 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.

Table 1: 2019 Eskay Creek 2019 PEA Detailed Parameters and Outputs

Assumptions

Gold Price (US$)

$1,325

Silver Price (US$)

$16

Exchange Rate (US$/C$)

0.77

Discount Rate

5%

Royalties

1%

Contained Metals

Contained Gold Ounces (koz)

2,212

Contained Silver Ounces (koz)

53,404

Contained AuEq Ounces (koz)

2,857

Mining

Mine Life (Years)

8.6

Strip Ratio (Waste:Mineralization)

7.2:1

Total Tonnage Mined (t)

175,270

Total Mineralized Material Mined (t)

21,307

Processing

Processing Throughput (TPD)

6,850

Average Diluted Gold Grade (g/t)

3.23

Average Diluted Silver Grade (g/t)

78

Average Diluted Gold Equivalent Grade (g/t)

4.17

Production

Gold Recovery

91.1%

Silver Recovery

92.4%

LOM Gold Production (koz)

2,022

LOM Silver Production (koz)

49,872

LOM Gold Equivalent Production (koz)

2,624

LOM Average Annual Gold Production (koz)

236

LOM Average Annual Silver Production (koz)

5,812

LOM Average Annual Gold Equivalent Production (koz)

306

Operating Costs

Mining Cost (C$/t Mined)

$3.44

Mining Cost (C$/t Milled)

$26.32

Processing Cost (C$/t Milled)

$21.64

G&A Cost (C$/t Milled)

$6.06

Total Operating Cost (C$/t Milled)

$54.03

Cash Costs and AISC

LOM Cash Cost (US$/oz Au) Net of Silver By-Product

$582

LOM Cash Cost (US$/oz AuEq) Co-Product

$731

LOM AISC (US$/oz Au) Net of Silver By-Product

$615

LOM AISC (US$/oz AuEq) Co-Product

$757

Capital Expenditures

Pre-Production Capital Expenditures (C$M)

$303

Sustaining Capital Expenditures (C$M)

$27

Reclamation Cost (C$M)

$52

Economics

After-Tax NPV (5%) (C$M)

$638

After-Tax IRR

51%

After-Tax Payback Period (Years)

1.2

After-Tax NPV:CAPEX Ratio

2.1:1

Pre-Tax NPV (5%) (C$M)

$993

Pre-Tax IRR

63%

Pre-Tax Payback Period (Years)

1.1

Pre-Tax NPV:CAPEX Ratio

3.3:1

Average Annual After-Tax Free Cash Flow (Year 1-9) (C$M)

$147

LOM After-Tax Free Cash Flow (C$M)

$959


1. Cash costs are inclusive of mining costs, processing costs, site G&A, treatment and refining charges and royalties
2. AISC includes cash costs plus corporate G&A, sustaining capital and closure costs
3. Gold Equivalent (AuEq) calculated via the formula: Au (g/t) + [Ag (g/t) / 82.8]

Sensitivities

After-tax economic sensitivities to commodity prices are presented in Table 2 illustrating the effects of varying gold and silver prices as compared to the base-case. Additional Project sensitivities will be presented in the Technical Report.

Table 2: After-Tax NPV (5%) and IRR Sensitivities to Commodity Prices

Lower Case

Base Case

Higher Case

Gold Price (US$/oz)

$1,200

$1,325

$1,500

Silver Price (US$/oz)

$14

$16

$18

After-Tax NPV (5%) (C$M)

$453

$638

$878

After-Tax IRR (%)

40%

51%

63%

After-Tax Payback (Years)

1.6

1.2

0.9

Average Annual After-Tax Free Cash Flow (Years 1-9) (C$M)

$117

$147

$187


Eskay Creek Mineral Resource Estimate

The Company's current Mineral Resource Estimate (MRE; effective date of February 28, 2019) completed by SRK Consulting (Canada) forms the basis for this PEA. The MRE does not include drilling results from the Company's recently initiated and ongoing 2019 Phase I infill program.

Table 3: Pit constrained Mineral Resource Statement reported at 0.7 g/t AuEq cut-off:

Grade

Contained Ounces

Tonnes

AuEq

Au

Ag

AuEq

Au

Ag

(000)

g/t

g/t

g/t

oz (000)

oz (000)

oz (000)

Total Indicated

12,650

5.8

4.3

110

2,340

1,740

44,660

Total Inferred

14,420

2.9

2.3

47

1,340

1,050

21,720



Table 4: Underground Mineral Resource Statement reported at a 5.0 g/t AuEq cut-off:

Grade

Contained Ounces

Tonnes

AuEq

Au

Ag

AuEq

Au

Ag

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