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Gunnison Copper Project

COMMODITY: Copper
LOCATION: Arizona, USA
SIZE: 9,560 Acres
OWNERSHIP:  100%
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Industry-Leading Economics

  • US$1,348.5 NPV & 44.9% IRR (After-tax, LOM US$3.93 Cu price, 7.5% discount rate)
  • Direct operating costs: $0.91/lb & Total Cash Costs: $1.21/lb
  • All-In Cost (LOM capital costs plus operating costs) of $1.70/lb
  • Pre-production capital costs of $45.1 million
  • 24 years of mine life
  • Starts at 25M lbs per year & expands to 125M lbs per year
  • 2.2 billion pounds of pure copper cathode to be produced

    *Based on March 2022 PFS

    Additional information about the GUNNISON PROJECT PREFEASIBILITY STUDY can be found in the technical report filed on SEDAR at www.sedar.com entitled

Reserves

North Star Mineral Reserves

  Short Tons (millions) Total Copper % Pounds of Cu (billions)
Probable 782 0.29 4.5

 

North Star Mineral Resources (as of July 7, 2015)

  Short Tons (millions) Total Copper % Pounds of Cu (billions)
Measured 199 0.36 1.43
Indicated 674 0.27 3.57
Measured + Indicated 873 0.29 4.99
Inferred 187 0.17 0.63

The Mineral Resources (0.05% cut-off) are inclusive of Mineral Reserves (0.05% cut-off). The oxide and transition portion of the Mineral Reserve has the potential to be mined using in-situ recovery methods with an estimated total copper recovery of 48%.

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Johnson Camp Mine (JCM)

The 100% owned Johnson Camp Mine is located just over one mile from the wellfield; copper-bearing solution will be processed here through the SX-EW facility into 99.999% pure copper cathode. Purchased in 2015 for only US$8.4 million, JCM saves Excelsior millions of dollars in capex.

First Copper Production

Environmentally Friendly Copper Extraction

  • Low water consumption (most groundwater is recycled)
  • No groundwater contamination; no acid mine drainage
  • Excellent mine closure plan
  • Remote location
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Well Stimulation

Wellfield stimulation has the potential to fundamentally change the performance of Excelsior’s in-situ wellfield.

Read More

 
 
 
 
 
 

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Corporate
Presentation

 
 

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Technical
Reports

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In-situ
Recovery
Video

IN SITU 05

What is
In-Situ Mining

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WELL STIMULATION