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El Cubo //

El Cubo covers approximately 8,150 hectares in the same district as Bolañitos, six kilometres southeast of the city of Guanajuato. Access is by municipal road and infrastructure includes the state power grid, and local labour, supplies and services in the city of Guanajuato. Similar to Bolañitos, the El Cubo subdistrict is characterized by multiple low-sulphidation epithermal veins typically thousands of metres long, up to 400 metres deep, and ranging up to 15 metres thick. The El Cubo mine is comprised of four underground mining operations feeding a central, 1,500 tonne-per-day plant, which produces high-grade silver-gold concentrates. The mine provides employment for 622 employees and 428 contractors.

During 2017, El Cubo produced 1.9 million oz of silver and 21,357 oz of gold for silver equivalent production of 3.5 million oz (using a 75:1 silver: gold ratio). Silver equivalent production at El Cubo was below guidance for 2017 due to the lower than planned gold production. Silver production met guidance as throughput, grades and recoveries were in line with plan. Gold production missed guidance due to 9% lower gold grades than plan as mining of the higher gold grade area of the Villalpando ore body was re-scheduled to 2018 for a more efficient mine plan.

2017 Results

Production 1.9 million oz silver/ 21,357 oz gold
3.5 million ounces of silver equivalent (75:1 silver:gold)
Ore Tonnes Processed 511,836/ 1,402 tpd
Grades silver 136 gpt/ gold 1.55 gpt
Recoveries silver 85.8%/ gold 83.7%
Cash Costs per Ounce $13.41
All In Sustaining Costs per Ounce $22.87

Reserves and Resources: Silver

  • 2.9 million oz silver
    Proven & Probable Reserves
  • 3.4 million oz silver
    Measured & Indicated Resources
  • 5.1 million oz silver
    Inferred Resources

Reserves and Resources: Gold

  • 27,000 oz gold
    Proven & Probable Reserves
  • 45,000 oz gold
    Measured & Indicated Resources
  • 73,200 oz gold
    Inferred Resources
*for full details, refer to the complete Reserves and Resources table found here

El Cubo is our largest mine.

Map El Cubo