Mar 17, 2012· Extraction, Loading and Hauling Operations / Ухах, ачих, тээвэрлэх процесс Common systems used in modern mining operations to extract, load, and haul waste and ore are:- Dragline systems - ... Surface Mining Methods / Ил олборлолтын аргууд ...
Mar 14, 2012· The term drilling is used for smaller diameter holes, with a few exceptions such as shaft drilling and raise drilling, where larger excavations are created by …