CONTROL SAMPLES USING FOR QUALITY ASSURANCE AND CONTROL (QA/QC)

Іn geological exploration, the quality of data underlying resource and reserve estimation is critically important. According to various international regulations current world best practices, Quality Assurance Control (QA/QC) programs are a necessary part exploration. (QA) used avoid problems with quality, (QC) aimed at detecting them in case their occurrence, together they form overall System – QA/QC. The article considers main stages history QA/QC development, which begins Middle Ages continues our time. samples control analytical tests have different types purposes / functions: standards, preparation blanks, coarse field duplicates, pulp duplicates umpire laboratory control. Their amount ratio topic research. published nine authors, recommended sample each type different. On average, all about 20% total number routine samples. In order highlight state issue, authors analyzed 111 for 87 ore projects according public reports disclosed by issuers Toronto Stock Exchange. So, practice, does not necessarily reach 20 % slightly more than 16 %. conclusions regarding can be presented as follows: (1) general increasing trend variety observed; (2) among types, so-called standards most often used, least blanks; (3) also depends on mineral type; (4) advanced exploration project, relative usually increases, but some cases it may decrease if results previous satisfactory, methodology changed.