%0 Conference Paper %A Pak, M. %A Preston, R.P. %A Groccia, C. %A Taylor, J. %D 2017 %T Conventional and advanced borehole investigation methods for inaccessible underground voids %P 457-465 %E M. Hudyma & Y. Potvin %C Sudbury %8 11-13 October %B UMT 2017: Proceedings of the First International Conference on Underground Mining Technology %K borehole investigation %K cavity monitoring system %K sonar scanner %1 Perth %I Australian Centre for Geomechanics %U https://papers.acg.uwa.edu.au/p/1710_36_Pak/ %R 10.36487/ACG_rep/1710_36_Pak