Las Casas-Rosasio & Cluster Cebollitas

Ownership: Minera La Ciénega, S.A. de C.V. (100% Fresnillo plc)
Location: Durango
Indicated and inferred resources: Resources included in Ciénega figures

Key Exploration

Las Casas: 

  • Development of the Las Casas vein is now complete at the 2180 level, exposing the vein with better grades and widths than expected; core drilling will explore in detail the vein extensions at depth
  • Far eastern section of the ore body, mine development has reached the Rosario Transversal shoot, which continues to show promise
  • Continue the drilling programme in order to confirm the continuity of the structure at deeper levels where better grades are expected
  • Geological evaluation was completed at the Canelas and Valle de Topia districts
  • Parametric drilling programmes in both locations will be implemented once the social and environmental permits have been secured


Cebollitas Cluster:

  • Development of the Taspana vein reached its western limit, showing continuity of grade at 3.1 g/t gold and 280 g/t silver, maintaining an average thickness of 1.8 metres over a strike length of 700 metres
  • Construction of the 2.1 kilometres long Hidalgo tunnel was completed reaching the Tajos vein, which has an average grade of 3.4 g/t gold and 475 g/t silver, average width of 0.6 metres and a length of 700 metres
  • Exploration continues to progress at the Taspana West, Tajos, Malinche and Portilla veins with exploration targeting deeper levels