Mining Milling Centerra Gold
The ISA millmissioned in October 2005 and provides additional incremental liberation of the fine refractory gold 2 5 microns enclosed in pyrite. The flotation tailings with an average grade of 0.45 gram of gold per tonne are thickened to 50 solids and subjected to cyanidation for ten hours in a CIL circuit similar to the circuit used for the sulphide concentrate.



































