CANADIAN BLAST-HOLE SURVEY STUDY
Down-hole surveys were conducted across 10 Canadian underground hard rock operations. The results have been analyzed to better understand typical drilling accuracy and the factors that result in blast-hole deviation. The data was further broken down by drill type (Boom, Horse-Shoe, Buggy, Cubex).
Case Study Snippet: Survey data was captured from a total of 10 underground mine sites across Canada between 2019 and 2020.
Across the 10 sites, four commodities are mined – gold (7), silver (1), copper (1) and nickel (1). All mines have narrow-vein ore bodies with the primary mining method being long/hole stoping. Across the 10 sites, a total of 454 holes were drilled using the ‘existing process’ and then later surveyed. The majority of toe deviation (66%) was due to alignment error – indicating flaws in the existing process for setting up the drill were primarily to blame for overall inaccuracy.
“There exists a significant opportunity for a step change improvement in drilling accuracy and stope performance – by reducing alignment error.”- Ryan Stimpson, Head of Product & Product Strategy at Minnnovare.
Download the Survey Study and learn more!