Sublevel caving is usually carried out when mining of the orebody through an open pit is no longer economically feasible. Mining now proceeds underground, underneath the open pit. At first, both a raise and a network of tunnels/drives are made. At different sublevels, jumbos are used for long hole drilling, drilling directly upwards into the roof. These holes are then charged with explosives and blasted and as the roofs cave in, the rock from the ground surface will cave in to the underground as well. Load Haul Dump (LHD) vehicles transport the muck, loosened rocks, to an ore pass where the rocks are lifted to the surface. The screen capture shows my designed Longhole Sublevel Caving mine coupled with the use of Paste Backfill. #undergroundmining #mineplanning #sublevelcaving