Authors : M.A. Saliu and J.M. Akande
Abstract: In underground mining and tunnelling, the often-unpredictable variability in ground conditions always leads to application of sub optimal drilling and blasting patterns, which results to poor performance. This research work is aimed at achieving advance of 3 m per round in Akouta Mining Company in Niger Republic. Hence, eleven tests of four types of cuts were carried out. The resultant advance per test is measured. Of the four types of cut only one, cut 9/13 gave advance of 2.9 m, which is close to the desire advance. The poorest of all is cut 12/20 with the entire charge blow out.
M.A. Saliu and J.M. Akande , 2007. Improvement of Drilling and Blasting in Underground Mine/Tunnel: A Case Study of Cominak Mine Niger Republic. Journal of Engineering and Applied Sciences, 2: 1546-1552.