The La Libertad Complex consists of La Libertad Mine, the Pavón Mine, and the Eastern Borosi Project.
Open Pit Operations
At the La Libertad Complex, Calibre has two open pit mines currently in operation, three that are planned to be developed within the next two years. Jabalí Antena and Rosario are situated at La Libertad, Pavón Norte and Pavón Central are located at Pavón, EBP-GV is situated at the EBP. Mill feed material from Pavón and EBP is trucked to the La Libertad processing plant.
La Libertad Mine - Jabalí Antena
Jabalí Antena is an existing open pit gold mine. Mining at Jabalí Antena is carried out using a conventional open pit truck and shovel mining methods. The open pit has been designed in two phases, with Phase 1 already completed in 2020, and mining of Phase 2 (East Extension) scheduled to commence in H2 2022 and completed by the end of 2023.
The Jabalí Antena pit design criteria were based on a conventional surface mine operation 5.0 m3 backhoe excavators, and haulage by a fleet of 40 t capacity trucks. Jabalí Antena is operated by a mining contractor. A ramp width of 10.0 m has been selected for the operation of 40 t trucks.
Design
Bench Height - 6.0 m;
Catch Bench - 6.0 m;
Bench Face Angle - 60.0°;
Ramp Width - 10.0 m;
Ramp Grade - 10.0 %;
Interramp Slope Angle - 32.0°;
Elevation Mining Limit - 512 masl.
Jabalí Antena Phase 2 (East Ext ........