Centauro Extension: 2nd Dynamic Leaching Plant

Ownership: Minera Penmont (100% Fresnillo plc)
Location: Sonora, Herradura District
Facilities: Leaching Plant
Commercial Production: 1H18
Plant Capacity: 8,000 TPD
Anticipated production: Avg. annual production 36 koz gold
Pre-operative Capex: US$ 110 million


This project will enable sulphides occurring deeper in the pit to be processed more efficiently. At time of analysis, the project was expected to extend the LOM at Herradura to 12 years with an average annual gold production of 390 koz;
with current reserves and the above production rate, the LOM is just over 20 yrs.

Key developments:

  • Board approval obtained and detailed engineering completed
  • Foundations of the milling area advanced and orders for various components placed
  • Continue testing electrical, instrumentation and control installation
  • The construction of this new plant is on track with commissioning expected in 2Q18
  • Final testing underway and commercial production expected in 3Q18