Technical Report for the Maricunga Gold Mine - Kinross Gold

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Kinross Gold CorporationMaricunga Mine Technical Report14.2 Pre-2002 Data Verification14.2.1 Collar DataVerification of the historic collar data identified one error of note. Collar coordinates of drillholes completed between 1986 and 1987 did not match the coordinates recorded on originalsurvey sheets. This error was also corrected.14.2.2 Survey DataMuch of the historical downhole survey data could not be located. The limited downholesurvey data that was located was used to verify the data in the IDB. No significant errorswere noted.14.2.3 Lithology, Alteration, Oxidation, Vein and Mineralization Data:Ten percent of all lithology, alteration, oxidation, vein description and mineralization data forthe 1997 – 1998 drill campaign was verified as this data was collected using field practicesand logging formats consistent with the 2002-2003 effort.14.2.4 Analytical DataTen percent of the historical analytical results in the IDB were verified against original assaycertificates. Rare errors were detected during the verification process but these were almostexclusively related to the recording of results below the detection limit for successiveprograms.14.3 2002-2003 Data Verification14.3.1 Collar DataPrior to entering collar data into the database, collar locations were visually checked forobvious errors such as transposed northings and eastings. Once entered, collar coordinatesand hole lengths were extracted and printed for direct comparison to the original surveycertificates. The collar coordinates were compared against the signed surveyors’ certificateand the hole length were checked against the geologists’ logs. Three independent checks of54
Kinross Gold CorporationMaricunga Mine Technical Reportthis information yielded rare errors. Collar information was also digitally checked against thesurveyors’ final compilation file; this check also yielded rare decimal place errors. Erroneousdata was corrected and reloaded. The corrected data was subjected to two additionalindependent checks.14.3.2 Survey DataPrior to entering the downhole survey data into the database it was visually scanned forobvious errors. After entry, the data was extracted and printed for manual verification relativeto the original downhole survey data contained in the files and provided by Comprobe. Dataverification of 10% of the downhole survey data was completed for the survey data. Twoindependent checks of this data detected no errors. Visual inspections of the plotted holetraces also failed to identify any obvious errors or miss-plots.14.3.3 Lithology, Alteration, Oxidation, Vein and Mineralization DataLithology, Alteration, Oxidation, Vein Description and Mineralization data collected during the2002-2003 field season was verified against the original logs. A 10% check of the databaseyielded an unacceptable amount of errors and led to a 100% check. The 100% checkyielded an error rate of 3.5%, with most of the errors related to the recording of alteration.These errors were corrected.14.3.4 Analytical DataA random 10% of the analytical data was verified against the original assay certificates.Only rare errors were detected, usually pertaining to how results below detection wereentered in the database. Erroneous data was corrected and re-entered.14.3.5 Geotechnical DataTen percent of the geotechnical data collected during the 2002-2003 field program wasverified against the original geotechnical logs yielding a significant error rate. As a result, a100% verification process was initiated. Significant error rates were noted in the fracturesper-meterfield. Error rates in the structural measurement and RQD fields were related toformat errors rather than data entry errors. These errors were corrected.55
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Technical Report for the Maricunga Gold Mine - Kinross Gold

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