• Operations

Björkdal Mine

Property at a Glance

Location
Skellefteå, Sweden
Land Package
12,949 hectares
Mining Method
Long-hole stoping
Product
Gold (gravity and flotation)
2019 Production
51,498 Gold oz
Life of Mine
10+ years
Processing Capacity
1.3 million tonnes per annum

2020 Outlook

Production
Gold (oz)
51,000 – 57,000
Antimony (t)
-
Gold Equivalent (oz)(1)
51,000 – 57,000
Cash Costs ($USD/oz)(2)
$750 – $900
All-in sustaining Costs ($USD/oz)(2,3)
$1,110 – $1,340
Capital Expenditures ($USDM)(4)
$22M – $27M
  • Notes
    • Assumes metal prices of: $1,478/oz, Sb $5,931/t. Consolidated costs per Au Eq. oz includes corporate overhead spending and total care and maintenance costs at Cerro Bayo
    • Cash and all-in sustaining costs are a non-IFRS measure
    • Consolidated all-in sustaining cost guidance includes expected corporate overhead spending and care and maintenance costs
    • Capital expenditures includes exploration at Björkdal and Costerfield; consolidated cost guidance includes expected Corporate G&A

2019 Performance

PRODUCTION
Gold (oz)
51,498
Cash Costs ($USD/oz)
945
All-in sustaining cost ($USD/oz)
$1,283
Capital Expenditures ($USDM)
18.6
  • Notes
    • Björkdal Mineral Reserves are estimated using drill hole and sample data as of September 30, 2019 and depleted for production through December 31st, 2019. Norrberget Mineral Reserves are based on a data crystallization date of October 4, 2017.
    • CIM definitions (2014) were followed for Mineral Reserves.
    • Open Pit Mineral Reserves are based on mine designs carried out on an updated resource model, applying a block dilution of 100% at 0.0 g/t Au for blocks above 1.0 g/t and 100% at in-situ grade for blocks between 0.4 g/t and 1.0 g/t.  The application of these block dilution factors is based on historical reconciliation data.  A cut-off grade of 0.4 g/t Au was applied.
    • Underground Mineral Reserves are based on mine designs carried out on an updated resource model. Minimum mining widths of 3.85 m for stopes (after dilution) and 4.35 m for development (after dilution) were used.  Stope dilution was applied by adding 0.5 m on each side of stopes as well as an additional 10% over break dilution. An overall dilution factor of 14.5% was added to development designs. Mining extraction was assessed at 95% for contained ounces within stopes and 100% for development.  A cut-off grade of 0.92 g/t Au was applied. An incremental cut-off grade of 0.4 g/t Au was used for development material.
    • Stockpile Mineral Reserves are estimated at a cut-off grade of 0.40 g/t Au and are based upon surveyed volumes supplemented by production data.
    • Mineral Reserves are estimated using an average long-term gold price of $1,300/oz, and an exchange rate of 9.0 SEK/US$.
    • Tonnes and contained gold are rounded to the nearest thousand.
    • Totals may appear different from the sum of their components due to rounding.
    • The Björkdal Mineral Reserve estimate was prepared by Derek Holm, FSAIMM, Senior Mining Engineer with RPA, who is a Qualified Person as defined by NI 43-101.
  • Notes
    • Björkdal Mineral Resources are estimated using drill hole and sample data as of September 30, 2019 and depleted for production through December 31, 2019.  Norrberget Mineral Resources are based on a data crystallization date of October 4, 2017.
    • CIM definitions (2014) were followed for Mineral Resources.
    • Mineral Resources are inclusive of Mineral Reserves.
    • Mineral Resources are estimated using an average Au price of $1,500/oz. and an exchange rate of 9.0 SEK/US$.
    • Bulk density is 2.74 t/m3 for veins and host rock. Bulk density is 2.92 t/m3 for skarn ore bodies.
    • High gold assays were capped to 30 g/t Au for the open pit mine.
    • High gold assays for the underground mine were capped at 60 g/t Au for the first search pass and 40 g/t Au for subsequent passes.
    • High gold assays at Norrberget were capped at 24 g/t Au.
    • Interpolation was by inverse distance cubed utilizing diamond drill, reverse circulation and chip channel samples.
    • Open pit Mineral Resources are estimated at a cut-off grade of 0.34 g/t Au and constrained by the resource pit design.
    • Underground Mineral Resources are estimated at a cut-off grade of 0.80 g/t Au.
    • A nominal two metres minimum mining width was used to interpret veins using diamond drill, reverse circulation, and underground chip sampling.
    • Reported Mineral Resources are exclusive of previously mined underground development and stopes. 
    • Stockpile Mineral Resources are estimated at a cut-off grade of 0.40 g/t Au and are based upon surveyed volumes supplemented by production data.
    • Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
    • Numbers may not add due to rounding.
    • The Björkdal Mineral Resource estimate was prepared by Reno Pressacco, P.Geo., Principal Geologist with RPA, who is a Qualified Person as defined by NI 43-101. The Norrberget Mineral Resource estimate was prepared by Jack Lunnon, CGeol, Senior Geologist with RPA, who is a Qualified Person as defined by NI 43-101.  

2020 NI 43-101