To　reduce　the　ore　loss　and　dilution　caused　by　blast-induced　rock　movement　in　open-pit　bench　blasting,　a　dividing　open-pit　blast　(DOPB)　method　was　theoretically　analyzed,　numerically　simulated　and　applied　to　the　Husab　Uranium　Mine,　Namibia.　First,　a　general　open-pit　bench　blasting　process　was　analyzed,　and　the　DOPB　method　was　introduced　after　comparing　it　with　the　echelon　pattern.　Next,　the　blasting　processes　of　the　echelon　pattern　and　the　DOPB　method　were　simulated　using　the　boned-particle　method,　while　the　finite　element　method　was　used　to　provide　a　blast　loading.　Finally,　two　field　applications　of　the　DOPB　method　to　reduce　ore　loss　and　dilution　in　Husab　Uranium　Mine　were　introduced　in　detail,　and　the　trial　blast　results　were　verified　by　3D　scanning　results,　radioactivity　measurement　results　and　ore　recovery　datasets.　The　obtained　results　show　that　multi-hole　bench　blasting　can　be　considered　to　be　the　combination　of　multiple　independent　single-hole　blasting　when　the　delay　time　is　large　enough.　Meanwhile,　the　DOPB　method　can　be　used　to　reduce　the　mixing　of　ore　and　waste　rock　fragments,　and　an　identifiable　ditch　that　matches　the　ore　boundary　can　be　created　in　the　muckpile.　Therefore,　serious　ore　loss　and　dilution　can　be　avoided　even　using　the　pre-blast　ore　boundary　to　guide　shovel　loading.　In　addition,　a　more　complex　identifiable　ditch　can　be　formed　with　the　help　of　more　accurate　electronic　detonators.　©　2023,　The　Author(s),　under　exclusive　licence　to　Springer-Verlag　GmbH　Germany,　part　of　Springer　Nature.