Maximising the recovery of secondary copper mineral orebodies is becoming more and more critical. This research reviews the copper recovery of the BRC orebody located at the Mount Isa Mine to maximise copper production and the economics of the operation as feed grades continue to decline. Various reagents and feed blend changes were investigated and referenced to previous research to assist in understanding the complex interactions taking place. The key results from the study illustrated that the Black Rock Chalcocite (BRC) orebody has four main copper deportments (chalcocite, covellite, chalcopyrite and cuprite) and three main gangue counterparts (quartz, pyrite and kaolinite). The thiocarbamate collector (DSP009) demonstrated significant improvement to copper recoveries of plus 7 per cent compared to sodium isobutyl xanthate (SIBX) alone. Additional BRC copper recovery and concentrate grade improvements may be achieved by dosing the F100 biopolymer dispersant to reduce quartz and kaolinite slimes, negatively impacting copper recovery and concentrate grade. The annualised benefit for the Auxiliary Mill circuit is calculated to be approximately 800 t of additional copper and a reduction in operating costs in the order of A$1 m.