jumpstart - you make a very valuable point there, we (cdu shareholders) should not be looking for vertical integration, we will have enough problems marketing our concentrates.
also, reported numbers for the NCu are 99.7% Cu or there abouts, my instincts tell me that refining will be required to 99.99% Cu (lme grade) before it can be used. ie cdu will need to flog it to a smelter.