Technical Report for the Maricunga Gold Mine - Kinross Gold

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Kinross Gold CorporationMaricunga Mine Technical Report13.4.4 Analysis of QA/QC DataFor the 2002-2003 drilling program all standard, blank and duplicate results were sent to Dr.Smee for analysis. Duplicate results were analyzed for precision and plotted on ThompsonHowarth graphs. Dr. Smee found the error rate and duplicate variance normal for porphyrygold deposits. In his final report, (July 20,2003) he concluded the gold assay database to beof commercial quality but raised concerns about eight of the 650 ALS Chemex digital files.All eight files, containing failures, had already been reanalyzed, were determined to havehad CMM field labelling errors, or were duplicated assay sets.The 2006 QA/QC data was compiled as it was received by the geologists at the site. Anyanomalous results were flagged and the lab contacted directly to discuss the variationsobserved. A series of samples representing approximately 10% of the total were also sent toALS Chemex as an independent check.13.4.5 Referee LaboratoryAssayers Canada (Assayers), Vancouver, was selected as the referee laboratory for theprogram. Assayers Canada has achieved Certificates of Laboratory Proficiency from theStandards Council of Canada for precious and base metal analysis. One pulp per ALSChemex batch of 40 was selected at random, including the CMM standards, blanks andduplicates. Additionally one of the 3 CMM standards was inserted in this sample stream tocheck Assayers at a frequency of 1 per 40. Three batches of checks (631 samples in total)were sent to Assayers over the duration of the program. Results were forwarded to Dr.Smee who concluded that the two labs essentially agreed on gold and cyanide soluble goldanalysis within normal precision limits.13.4.6 Statement of Author’s OpinionThe author concurs with Dr. Smee’s opinion that the slight variations observed were withinnormal precision limits.52
Kinross Gold CorporationMaricunga Mine Technical Report14.0 DATA VERIFICATION14.1 General 2002-2003Kinross Technical Services verified the Initial Database (IDB) to copies provided by BemaGold Corporation and MRDI.Original drill logs, assay certificates, survey worksheets and other original data were locatedand used to verify the data contained in the IDB. Verification of the historical data included:• Collar location• Collar azimuth and dip• Downhole azimuth and dip• Total gold and copper analyses• Cyanide soluble gold and copper analyses• Primary lithology code• Primary alteration code• Primary oxidation codeAssay certificates, and original logs were found for approximately 80% of the historical data.For the 2006 Pancho drill program a system of double entry was established. It included allof the items listed above plus the geology logs as prepared by the field geologists. The finalgrade database was compiled by Kinross Technical Services (KTS). KTS and CMMassumed that the historical data used in the past was sufficiently free of errors or omissions.Details of the data verification process and database management for 2002-2003 areprovided in the following paragraphs.53
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Technical Report for the Maricunga Gold Mine - Kinross Gold

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