Titlebook: Blasting Technology for Underground Hard Rock Mining; Vivek Kumar Himanshu,A. K. Mishra,P. K. Singh Book 2023 The Editor(s) (if applicable

Prologue

愛國者

Leitfaden für Bausachverst?ndige/ring blasting due to the absence of sufficient free face for the movement of the blasted rock mass. To address this issue, slot raises are excavated step-wise using drop raise method. However, the drop raise method is time intensive and hence not feasible in order to enhance the pace of production.