cdu likelyup soon in senate inquiry into asic, page-132

Well said Gungho.

Mining is based on the resource block model which in turn is based on drill results of which Cudeco believe was unable to accurately determine the grades because of the nugget effect. God knows how you are suppose to give an accurate assessment of stock piles when you're stockpiling 4.5 Mtpa or 136 loads per day using 90 tonne trucks because the operation would come to a stand still waiting for lab results. The pit controllers will sort the wheat from the chaff and the geo's will make a reasonable estimate of what goes where. A more accurate measurement will be a composite sample after the ore is crushed before its fed to the process plant on say a 4,6 or even 12 hourly basis to direct the ROM loader driver of how many buckets he feeds the crusher from each stockpile to maintain a steady blend