Technical Report for the Fort Knox Mine - Kinross Gold

Fort Knox Mine Technical Reportinvestigated to determine the cause and the set of samples will be re-run to clarify theassays. The authors consider the results of the past operating year to be withinacceptable error levels.13.4 Field Duplicates ProgramHistorically, FGMI has collected duplicate samples at random from the RC drill samplepopulation. These duplicates were collected from the reject portion of the sample splitterand are used to monitor sample analysis precision. The samples were bagged andtagged consistent with FGMI’s normal sample submission practices so that theduplicates are indistinguishable from the normal sample population. The FGMI technicalstaff carefully reviewed these duplicate samples. Any samples falling outside expectedtolerance levels are reviewed to determine the cause of the discrepancy. The authorsconsider the results of the duplicate analyses for the previous operating years to bewithin acceptable error levels.13.5 StandardsFGMI also submits known standards with the unknown drill samples. Pulp samples ofknown grade are submitted to the laboratory to monitor analytical precision.From 2001 to 2005, standards were submitted at a rate of two standards per core hole,and every 100 feet for reverse circulation holes. These standards, representing differentranges of gold grades, were prepared from Bondar-Clegg samples that were collectedfrom True North material. The samples and their values are as follows:TNATNBTNCTNDTNETNG0.000 opt Au0.006 opt Au0.019 opt Au0.058 opt Au0.081 opt Au0.190 opt Au42