
- El Cubo is a high-grade, epithermal-vein, underground precious metals mine that has been in operation for almost 200 years.
- From 2012-2019 Endeavour Silver produced 12M ounces of silver and 144,000 ounces of gold from El Cubo.
- Capacity: 45,000 tonnes per month.
The Centrepiece of a Hub & Spoke Mining Strategy.

- El Cubo Mill and Processing Complex.
- Major upgrades completed in 2012 and 2021 (~US$30M in total).
- Processing uses conventional crushing, grinding, flotation and silver-gold concentrate filtration.
Clean. Dry. Organized.
Mineral Resources Estimate (effective date August 1, 2024) | |||||||
Classification | Tonnes (kt) |
Ag (g/t) |
Au (g/t) |
AgEq (g/t) |
Ag (Moz) |
Au (Koz) |
AgEq (Moz) |
Indicated | 429 | 144.1 | 1.79 | 283.9 | 2.0 | 25 | 3.9 |
Inferred | 3,711 | 141.7 | 2.01 | 298.5 | 16.9 | 240 | 35.6 |
Source: For additional details refer to the technical report dated January 15, 2025 (effective date August 1, 2024) titled “NI 43-101 Technical Report On The El Cubo And El Pinguico Silver Gold Complex, Guanajuato, Mexico” available on SEDAR+
Silver equivalent calculated using 78:1 Ag:Au ratio.

- Several high-grade transverse veins also exist at El Cubo, such as at the Santa Cecilia mine.
- GSilver will mine using a narrow 1.4 meter minimum vein cut-off; this will generate less dilution, less waste, less tailing and less cost per ounce produced.
- The mining method is primarily cut & fill with some resue mining, which allows for selective, non-dilutive mining that focuses on the vein itself.