2017
DOI: 10.1080/03717453.2017.1414104
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Optimal grade control sampling practice in open-pit mining – a full-scale blast hole versus reverse circulation variographic experiment

Abstract: Misclassification of ore grades results in lost revenues and the need for representative sampling procedures in open-pit mining is increasingly important in all mining industries. This study evaluated possible improvements in sampling representativity with the use of Reverse Circulation (RC) drill sampling compared to manual blast hole (BH) sampling in the Leveäniemi open-pit mine, northern Sweden. The results of the variographic experiment showed that sampling variability was lower for RC than for BH sampling… Show more

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“…As Engström et al [9] indicate, with so many mineral commodities and mining methods in use globally, there is no universal best practice for open pit drill sampling, and each case must be evaluated individually.…”
Section: Methodology and Introductionmentioning
confidence: 99%
“…As Engström et al [9] indicate, with so many mineral commodities and mining methods in use globally, there is no universal best practice for open pit drill sampling, and each case must be evaluated individually.…”
Section: Methodology and Introductionmentioning
confidence: 99%