Technical operating cost summary
Phase 1 Phase 2 Phase 3 Phase 4
years 4 thru 20		 Average
Copper production mt              23 592             66 510           114 590             114 906  
Cobalt production  mt                  890               2 757               6 725                 6 057  
Underground Mining k$              29 106             37 542             55 362               42 125  
Open Pit Mining k$              20 747             70 591             73 734               49 522  
Kamoto Dima Concentrator k$                8 415             13 696             22 752               25 047  
Luilu metallurgical plant k$              22 762             30 524             50 801               49 235  
G&A costs k$              19 596             15 579             17 392               11 913  
total costs            100 626           167 932           220 041             177 841  
Cost per lb (US$/lb Cu)                 1.93                1.15                0.87                  0.70                  0.95  
Co credit @base price US$/lb Co k$              19 621             60 781           148 259             133 526  
total costs after deducting Co credit              81 005           107 151             71 782               44 315  
Cost per lb Cu (after  Co credit)[1]                 1.56                0.72                0.28                  0.17                  0.52  
Cost per mt (US$/mt Cu)                4 265               2 525               1 920                 1 548                2 269  
Cost per mt (US$/mt Cu with Co credit)                3 434               1 586                 617                   380                1 663  
G&A costs k$ as % of technical costs 24.2% 10.2% 8.6% 7.2%
[1]
This is done only for the purpose of establishing a cost per equivalent lb of copper.